AT-2874SX
Gigabit Ethernet Fiber ExpressCard
AT-2874SX/SC
Installation and User’s Guide
613-001873 Rev. A
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Electrical Safety and Emissions
Standards
This product meets the following standards.
U.S. Federal Communications Commission
Declaration of Conformity
Manufacturer Name: Allied Telesis, Inc.
Declares that the product: Gigabit Ethernet Fiber ExpressCard
Model Number: AT-2874SX/SC
This product complies with FCC Part 15B, Class B Limits:
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device
must not cause harmful interference, and (2) this device must accept any interference received, including interference
that may cause undesired operation.
Radiated Energy
Note: This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15
of FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in
accordance with instructions, may cause harmful interference to radio or television reception, which can be determined
by turning the equipment off and on. The user is encouraged to try to correct the interference by one or more of the
following measures:
-
-
-
-
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and the receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
Changes and modifications not expressly approved by the manufacturer or registrant of this equipment can void your
authority to operate this equipment under Federal Communications Commission rules.
Industry Canada
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.
European Union Restriction of the Use of Certain Hazardous Substances
(RoHS) in Electrical and Electronic Equipment
This Allied Telesis RoHS-compliant product conforms to the European Union Restriction of the Use of Certain Hazardous
Substances (RoHS) in Electrical and Electronic Equipment. Allied Telesis ensures RoHS conformance by requiring
supplier Declarations of Conformity, monitoring incoming materials, and maintaining manufacturing process controls.
RFI Emissions
Immunity
FCC Class B, EN55022 Class A, VCCI Class A, C-TICK, CE
EN55024
Electrical Safety
EN60950-1 (TUV), UL 60950-1 (CULUS)
Laser Safety
EN60825
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Translated Safety Statements
Important: The indicates that a translation of the safety statement is available in a PDF
document titled “Translated Safety Statements” posted on the Allied Telesis website at:
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Contents
Preface ..................................................................................................................................................................................7
Safety Symbols Used in this Document..................................................................................................................................8
Contacting Allied Telesis ........................................................................................................................................................9
Chapter 1: Overview ..........................................................................................................................................................11
Description............................................................................................................................................................................12
PCI ExpressCard...........................................................................................................................................................12
SC Fiber Optic Adapter .................................................................................................................................................12
LED ...............................................................................................................................................................................13
Stabilizer........................................................................................................................................................................13
Supported Operating Systems .............................................................................................................................................14
Driver for Linux Systems ...............................................................................................................................................14
Features ...............................................................................................................................................................................15
Contents of Your Shipment ..................................................................................................................................................16
Warranty Registration...........................................................................................................................................................17
Chapter 2: Installing the Hardware ..................................................................................................................................19
Reviewing Safety Precautions..............................................................................................................................................20
Pre-Installation Checklist ......................................................................................................................................................21
Installing the AT-2874SX ExpressCard................................................................................................................................22
Connecting the Network Cable.............................................................................................................................................26
Chapter 3: Installing the Driver Software ........................................................................................................................27
Overview...............................................................................................................................................................................28
Guidelines .....................................................................................................................................................................29
Accessing Device Manager ..................................................................................................................................................30
Accessing Device Manager on Windows 8 ...................................................................................................................30
Accessing Device Manager on Windows Vista or Windows 7.......................................................................................32
Accessing Device Manager on Windows XP.................................................................................................................33
Uninstalling Driver Software .................................................................................................................................................36
Downloading the Setup File..................................................................................................................................................38
Executing the Setup Program...............................................................................................................................................39
Chapter 4: Modifying Advanced Properties ....................................................................................................................43
Overview...............................................................................................................................................................................44
Guidelines .....................................................................................................................................................................44
Supported Advanced Properties...........................................................................................................................................45
Advanced Properties for Windows XP...........................................................................................................................45
Advanced Properties for Windows Vista and Windows 7..............................................................................................45
Advanced Properties for Windows 8 .............................................................................................................................46
Accessing Advanced Properties...........................................................................................................................................47
Flow Control .........................................................................................................................................................................49
Interrupt Moderation .............................................................................................................................................................50
IPv4 Checksum Offload........................................................................................................................................................52
Jumbo Packet.......................................................................................................................................................................53
Large Send Offload (IPv4)....................................................................................................................................................54
Large Send Offload v2 (IPv4)...............................................................................................................................................56
Large Send Offload v2 (IPv6)...............................................................................................................................................57
Log Status Messages...........................................................................................................................................................58
Max IRQ per Sec..................................................................................................................................................................59
Network Address ..................................................................................................................................................................60
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
Receive Side Scaling............................................................................................................................................................63
Speed & Duplex....................................................................................................................................................................64
TCP/UDP Checksum Offload (IPv4).....................................................................................................................................65
Appendix A: Specifications ..............................................................................................................................................77
Physical Specification...........................................................................................................................................................77
Appendix B: Cleaning Fiber Optic Connectors ...............................................................................................................79
Overview...............................................................................................................................................................................80
Cleaning Using a Cartridge-Type Cleaner............................................................................................................................81
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Preface
This manual is the installation and user’s guide for the AT-2874SX Gigabit
Ethernet Fiber ExpressCard. The instructions in this guide explain how to
install the ExpressCard on a laptop computer, install and uninstall the
driver software, and configure the advanced properties. The AT-2874SX
ExpressCard has one model available:
AT-2874SX/SC
This preface contains the following sections:
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
Safety Symbols Used in this Document
This document uses the following conventions:
Note
Notes provide additional information.
Caution
Cautions inform you that performing or omitting a specific action
may result in equipment damage or loss of data.
Warning
Warnings inform you that performing or omitting a specific action
may result in bodily injury.
Warning
Warnings inform you that an eye and skin hazard exists due to the
presence of a Class 1 laser device.
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Preface
Contacting Allied Telesis
If you need assistance with this product, you may contact Allied Telesis
technical support by going to the Support & Services section of the Allied
the following services on this page:
24/7 Online Support - Enter our interactive support center to
search for answers to your questions in our knowledge database,
check support tickets, learn about Return Merchandise
Authorization (RMA), and contact Allied Telesis technical experts.
USA and EMEA phone support - Select the phone number that
best fits your location and customer type.
Hardware warranty information - Learn about Allied Telesis
warranties and register your product online.
Replacement Services - Submit an RMA request via our interactive
support center.
Documentation - View the most recent installation guides, user
guides, software release notes, white papers and data sheets for
your product.
Software Updates - Download the latest software releases for your
product.
For sales or corporate contact information, go to
www.alliedtelesis.com/purchase and select your region.
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
Description
The AT-2874SX ExpressCard is a Gigabit Fiber Ethernet PCI
ExpressCard with an SC fiber optic adapter based on Marvell 88E8059
chipset.
The AT-2874SX ExpressCard connects a laptop computer to a Gigabit
Ethernet network using fiber optic cabling and an SC adapter. The
ExpressCard operates at a speed of 1000 Mbps in the full-duplex mode.
First, insert the AT-2874SX ExpressCard into the PCI ExpressCard slot of
a laptop. After you inserted the ExpressCard into your laptop computer,
install driver software. To insert the ExpressCard into your laptop, see
Chapter 2, “Installing the Hardware” on page 19. To install driver software,
Figure 1. AT-2874SX ExpressCard
PCI ExpressCard The AT-2874SX ExpressCard has a 34mm-wide PCI ExpressCard
interface. You can install the AT-2874SX ExpressCard in a 34mm or
54mm PCI ExpressCard slot on your laptop computer.
A PCI ExpressCard is a new notebook interface that replaces the PCMCIA
Card Bus interface.
SC Fiber Optic The AT-2874SX/SC model is equipped with a 1000BASE-SX port with the
SC adapter for attaching the ExpressCard to a compatible link partner.
Adapter
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Chapter 1: Overview
The SC adapter is shown in Figure 2.
Figure 2. SC Fiber Optic Adapter
Figure 3. AT-2874SX LED
Table 1 describes the link states that the LED indicates.
Table 1. Fiber Optic Port LED Status
State
Green
Description
The port is operating at 1000 Mbps and has a valid
link.
Flashing
The port is receiving or transmitting network packets
at 1000 Mbps.
ExpressCard fit into the 54mm PCI ExpressCard slot. Allied Telesis
recommends utilizing the stabilizer when installing the ExpressCard in the
54mm interface slot.
Figure 4. Stabilizer
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
Supported Operating Systems
The following operating systems are supported:
Windows XP
Windows Vista
Windows 7
Windows 8
Linux
To install driver software for Windows Operating Systems, see Chapter 3,
“Installing the Driver Software” on page 27 for detailed information.
Driver for Linux If your Linux system has an inbox driver for the AT-2874SX ExpressCard,
you do not need to install a driver. If your Linux system does not have a
driver for the AT-2874SX ExpressCard, you must install one.
Systems
To obtain driver software for AT-2874SX ExpressCard, go to the Marvell’s
driver download website:
The AT-2874SX ExpressCard is based on Marvel 88E8057 chipset so that
you select ”88E8057” from the Part Number drop-down list.
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Chapter 1: Overview
Features
The AT-2874SX ExpressCard supports the following features:
One 1000BASE-SX port with an SC fiber optic adapter
Link/Activity LED
PCI ExpressCard Interface
Jumbo frames
Checksum offload
Flow control (IEEE 802.3x)
Traffic optimization (IEEE 802.1p)
PXE remote boot
RoHS Compliant
CPU task offload
TCP segmentation
Microsoft-certified drivers
Hot insertion and removal
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
Contents of Your Shipment
The following items are included with your AT-2874SX ExpressCard:
Antistatic bag
The ExpressCard is shipped in an antistatic bag. It protects the card
when stored or shipped. Keep the card in its packaging until ready for
installation.
Rubber plug
The rubber plug prevents the fiber optic adapters from being exposed
to dust particles. Cover the connectors when the fiber optic adapters
are not used.
Stabilizer
When installing the AT-2874SX ExpressCard into the 54mm PCI card
slot of your laptop computer, attach the stabilizer to your AT-2874SX
ExpressCard.
Note
The AT-2874SX ExpressCard is not shipped with a software driver
CD. You must download the setup file from the Allied Telesis
Inform your network equipment supplier of any missing or damaged items.
If you need to return the ExpressCard, you must pack it in the original (or
equivalent) packing material or the warranty will be voided. See
The product documentation is available in Portable Document Format
can view the documents online or download them onto a local workstation
or server.
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Chapter 1: Overview
Warranty Registration
Allied Telesis hardware products are covered under limited warranties.
All Allied Telesis warranties are subject to and provided only on the terms
and conditions set out in the Allied Telesis Limited Warranties listed on the
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
Reviewing Safety Precautions
Review the following safety precautions before you begin to install the AT-
2874SX ExpressCard.
Note
The indicates that a translation of the safety statement is
available for viewing in portable document format (PDF) titled
Translated Safety Statements from our web site at
Warning
This is a “Class 1 LED product”. L1
Warning
Do not stare into the laser beam. L2
Warning
Do not look directly at the fiber optic cable ends or inspect the cable
ends with an optical lens. E29
Warning
Do not work on this equipment or cables during periods of lightning
activity. E2
Warning
Operating Temperature: This product is designed for a maximum
ambient temperature of 40 degrees C. E7
Note
All Countries: Install this product in accordance with local and
National Electric Codes. E8
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Chapter 2: Installing the Hardware
Pre-Installation Checklist
Before installing the AT-2874SX ExpressCard, check the following list:
1. Verify that your laptop is using the latest BIOS.
2. Check the ExpressCard for visible signs of damage, particularly on the
edge connector.
Caution
Do not attempt to install a damaged product. If the product is
damaged, report it to Allied Telesis. See “Contacting Allied Telesis”
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
Installing the AT-2874SX ExpressCard
The following instructions describe how to install the AT-2874SX
ExpressCard in a laptop computer equipped with a 34 mm or 54 mm PCI
ExpressCard interface slot. The installation illustrations in this manual use
the 54 mm interface.
For additional information about installing an PCI ExpressCard on your
particular laptop, refer to the manual that was supplied with your laptop.
Note
To perform the following procedure, you need to supply a pen.
To install an AT-2874SX ExpressCard, do the following:
2. Select the 34 mm or 54 mm ExpressCard slot.
Note
If you do not know how to identify a PCI ExpressCard slot, refer to
your laptop documentation.
Figure 5. Selecting the PCI ExpressCard Slot
3. Use a pen and press the button toward the laptop and to the left. See
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Chapter 2: Installing the Hardware
Figure 6. Pressing the Button
The button pops out along with the plate. See Figure 7.
Figure 7. The Button and Plate after Pressing the Button
Keep the plate in a safe place. You may need it for future use.
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
Figure 8. Removing the Plate
5. When installing the ExpressCard in the 54mm Express Card slot,
Note
When installing the ExpressCard in the 34mm ExpressCard slot,
skip this step.
Figure 9. Attaching the Stabilizer to the AT-2874SX ExpressCard
6. Applying even pressure at both corners of the ExpressCard, push the
card until it is firmly seated in the PCI ExpressCard slot. Figure 10 on
page 25 shows how to insert the card in the 54mm slot.
The ExpressCard fits snugly into the slot.
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Chapter 2: Installing the Hardware
Figure 10. Inserting the Unit into the 54mm Slot
Caution
Do not use excessive force when seating the card. Applying excess
force may damage the system or the card. If the card resists seating,
remove it from the system, realign it, and try again.
7. Make sure the ExpressCard is seated securely.
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
Connecting the Network Cable
The AT-2874SX ExpressCard has a fiber optic adapter for attaching the
laptop to a compatible link partner, or an IEEE 802.3z compliant Gigabit
Ethernet switch. To connect the ExpressCard to the network, you must
have a fiber optic cable with an SC connector.
To connect a fiber optic cable to the ExpressCard, do the following:
1. Remove the rubber plug from the ExpressCard.
Keep the rubber plug in a safe place. You may need it for future use.
Warning
The fiber optic ports contain a Class 1 LED device. When the port is
disconnected, always cover them with the provided plug. Exposed
ports may cause skin or eye damage.
2. Connect one end of the fiber optic cable to the ExpressCard.
3. Connect the other end of the fiber optic cable to the appropriate
Ethernet fiber optic port.
4. Observe the LED signal to check the link state.
After the cable is properly connected at both ends, the ExpressCard
LED operation.
Note
Even minor smudges or dirt on the end face of the fiber can disrupt
light transmission and lead to failure of the connection. For
instructions that describe how to clean the fiber optic connector, see
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
Overview
When you physically install the AT-2874SX ExpressCard, the Windows
operating system detects a new hardware and may install an inbox,
Marvell, or Allied Telesis driver software for your ExpressCard. You must
uninstall the driver that was automatically installed before installing the
proper Allied Telesis driver software.
Note
If you install the proper Allied Telesis driver without uninstalling the
existing driver, your system displays unsupported options of the
Speed & Duplex, Wake on Magic Packet, and Wake on Pattern
page 76 for more information.
If your system is Windows 8, you must uninstall the driver before installing
the proper Allied Telesis driver software because Windows 8 automatically
installs an inbox driver.
Windows XP, Windows Vista, and Windows 7 do not come with an inbox
driver for the AT-2874SX ExpressCard; however, the system may install a
driver automatically if the Windows operating system was updated or a
Marvell or Allied Telesis driver already resides in the system. If Device
Manager lists your ExpressCard as a Marvell or Allied Telesis device, you
must uninstall the driver before installing the proper Allied Telesis driver.
To install driver software, do the following:
1. Access the Device Manager to check whether a driver is automatically
If your AT-2874SX ExpressCard is listed as an Ethernet Controller,
operating system lists an adapter as an Ethernet Controller.
2. Uninstall the driver software that was automatically installed. See
3. Download the setup file from the Allied Telesis website. See
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Chapter 3: Installing the Driver Software
Guidelines Here are the guidelines for installing the driver software on your operating
system:
To install the driver software, you must have administrative
privileges.
When you physically install the AT-2874SX ExpressCard, your
Windows systems detects a new adapter and may install a driver
that exists in your system. You must uninstall the driver before
executing the setup program.
Device Manager lists an adapter as an Ethernet Controller when
no driver is installed.
Device Manger lists an adapter as a Marvell or Allied Telesis
device when Marvell or Allied Telesis driver has been installed.
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
Accessing Device Manager
When you uninstall the driver software for AT-2874SX ExpressCard, you
must first access Device Manager.
The procedures for accessing Device Manager are slightly different
among Windows operating systems. To access Device Manager on your
operating system, follow one of the procedures below:
Accessing Device To access Device Manager on Windows 8, do the following:
Manager on
Windows 8
1. Move the cursor to the lower left corner of the desktop.
The Start tile appears as shown in Figure 11.
Figure 11. Start Tile on Windows 8
2. Right-click the Start tile.
The drop-up menu appears as shown in Figure 12 on page 31.
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Chapter 3: Installing the Driver Software
Figure 12. Drop-up Menu on Windows 8
3. Select Device Manager from the menu.
The Device Manager window opens as shown in Figure 13.
Note
The Windows system detects a new hardware and creates an entry
as Ethernet Controller, Marvell device, or Allied Telesis device.
Figure 13. Device Manager on Windows 8
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
Accessing Device To access Device Manager on Windows Vista or Windows 7, do the
following:
Manager on
Windows Vista or
Windows 7
1. Right-click the Computer icon on the desktop and select Properties.
The System window is opened as shown in Figure 14.
Figure 14. System Window on Windows Vista and Windows 7
2. Click Device Manager on the left side bar.
The Device Manager window opens as shown in Figure 13 on page
31.
Note
The Windows system detects a new hardware and creates an entry
as Ethernet Controller, Marvell device, or Allied Telesis device.
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Chapter 3: Installing the Driver Software
Figure 15. Device Manager Window Vista and Windows 7
Accessing Device To access Device Manager on Windows XP, do the following:
Manager on
Windows XP
1. Right-click the My Computer icon on the desktop and select
Properties.
The System Properties window is opened as shown in Figure 16.
Figure 16. System Properties Window on Windows XP
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
2. Select the Hardware Tab.
The Hardware page is shown in Figure 17.
Figure 17. Hardware Page on Windows XP
3. Click Device Manager.
The Device Manager window opens as shown in Figure 13 on page
31.
Note
The Windows system detects a new hardware and creates an entry
as Ethernet Controller, Marvell device, or Allied Telesis device.
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Chapter 3: Installing the Driver Software
Figure 18. Device Manager Window on Windows XP
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
Uninstalling Driver Software
When you physically install the AT-2874SX ExpressCard, your Windows
operating system detects a new hardware and may install an inbox,
Marvell, or Allied Telesis driver. You must uninstall the driver that the
operating system automatically installed.
1. Open Device Manager.
For instructions on how to open Device Manager, see “Accessing
2. In the Device Manager window, expand the Network adapters on the
list.
3. Right-click a Marvell device or Allied Telesis device entry.
Shortcut menu appears as shown in Figure 19.
Figure 19. Device Manager Uninstall Window
4. Select Uninstall.
The Confirm Device Uninstall window pops up.
5. Check the checkbox if you wan to delete the driver software.
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Chapter 3: Installing the Driver Software
Note
This option is not available for Windows XP.
6. Click OK to complete the uninstall.
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
Downloading the Setup File
The AT-2874SX ExpressCard is not shipped with a CD including the setup
program to install driver software. You must download the setup file from
the Allied Telesis website.
To download the setup file, do the following:
1. Open a web browser, such as Internet Explorer or FireFox, on your
system and enter the following:
2. The Allied Telesis Software Download page is displayed.
3. Select “AT-2874SX” from the pulldown menu of Product.
A list is displayed as shown in Figure 20.
.
Figure 20. Software Downloads List
4. Click “AT-2874SX Drivers for Windows.”
5. Save the AT-2874SX-drivers-setup zip folder onto your system and
record the location of the folder.
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Chapter 3: Installing the Driver Software
Executing the Setup Program
To install the driver software for the AT-2874SX ExpressCard, do the
following:
1. Locate the AT-2874SX setup zip folder that you downloaded from the
Allied Telesis website onto your system.
2. Extract files from the zip folder.
example.
Figure 21. Setup File
4. Double-click the setup.exe file.
The User Account Control window appears, prompting you to allow the
Marvell Miniport Driver program to make a change on your system.
Note
If you are using Windows XP operating system, the User Account
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
5. Click Yes to allow Marvell Miniport Driver to be installed.
The Marvell Miniport Driver Setup Wizard window comes up. See
Figure 22. Marvell Miniport Driver Setup Wizard
6. Click Next.
The Licence Agreement window comes up as shown in Figure 23.
Figure 23. Setup Wizard License Agreement
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Chapter 3: Installing the Driver Software
7. Read the License Agreement.
8. If you accept the terms of the agreement, select the first option and
click Install.
When the installation is completed, the Installation Complete window is
displayed. See Figure 24.
Figure 24. Installation Complete
9. Click Next.
The final Wizard windows comes up as shown in Figure 25 on page
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
Overview
The AT-2874SX ExpressCard allows you to modify advanced properties
to meet your requirements. To access the advanced properties, access
Device Manager, then go to each advanced property page.
Guidelines Here are the guidelines to modifying the advanced properties:
To change the advanced property settings, you must have
Administrator privileges.
When you upgrade the driver software, the settings of the
advanced properties may change. Verify the settings after
upgrading the driver software.
If the Speed & Duplex, Wake on Magic Packet, or Wake on Pattern
Match property shows options, the proper Allied Telesis driver is
not installed. Uninstall the driver from Device Manager, download
the setup file from Allied Telesis website, and execute the setup
program. For more information, see Chapter 3, “Installing the
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Chapter 4: Modifying Advanced Properties
Supported Advanced Properties
The supported advanced properties depend upon Windows operating
systems.
Advanced Table 2 lists supported advanced properties for Windows XP. Driver
software version 11.45.3.3 is available for Windows XP.
Properties for
Windows XP
Table 2. Advanced Properties for Windows XP
Driver
Version
Advanced Property
Windows 7. Driver software version 11.45.3.3 is available for Windows
Vista and Windows 7.
Properties for
Windows Vista
and Windows 7
Table 3. Advanced Properties for Windows Vista and 7
Driver
Version
Advanced Property
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
Table 3. Advanced Properties for Windows Vista and 7 (Continued)
Driver
Version
Advanced Property
software version 12.10.10.3 is available for Windows 8.
Properties for
Windows 8
Table 4. Advanced Properties for Windows 8
Driver
Version
Advanced Property
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Chapter 4: Modifying Advanced Properties
Accessing Advanced Properties
To modify advanced properties, first access Device Manager, open the
properties of your ExpressCard interface, and select a feature you want to
change its setting.
1. To access the Device Manager, follow one of these procedures:
2. In the Device Manager window, double-click Allied Telesis AT-
2874xx.
The properties window pops up as shown in Figure 26.
Figure 26. Properties Window
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
3. Click the Advanced tab.
The Advanced Properties window opens as shown in Figure 27.
Figure 27. Advanced Properties Window
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Chapter 4: Modifying Advanced Properties
Flow Control
The Flow Control feature allows you to control the flow between the
adapter and its link partner. You can enable or disable the adapter to
process received PAUSE frames and transmit PAUSE frames.
To enable or disable the Flow Control feature, do the following:
1. Access the Advanced Properties.
2. Select Flow Control in the Property box.
The Flow Control page is displayed as shown in Figure 28.
Figure 28. Flow Control Page
3. Select one of the following options:
Disabled — The adapter ignores PAUSE frames.
Tx & Rx Enabled — The adapter processes PAUSE frames when
receiving and transmits PAUSE frames. This is the default setting.
4. Click OK.
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Interrupt Moderation
The Interrupt Moderation feature allows you to control the rate of interrupts
to the CPU during packet transmission and reception. When this feature is
enabled, interrupts are handled as a group so that the CPU utilization
decreases; however, the latency may increase. To specify the interrupt
Note
Windows 8 does not support the Max IRQ per Sec property. See
To enable or disable the Interrupt Moderation feature, do the following:
1. Access the Advanced Properties.
2. Select Interrupt Moderation in the Property box.
The Interrupt Moderation page is displayed as shown in Figure 29.
Figure 29. Interrupt Moderation Page
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Chapter 4: Modifying Advanced Properties
3. Select one of the following options:
Disabled — The Interrupt Moderation feature is disabled
Enabled — The Interrupt Moderation feature is enabled. This is
the default setting.
4. Click OK.
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IPv4 Checksum Offload
The IPv4 Checksum Offload feature allows the ExpressCard to verify the
IPv4 checksum to enhance IPv4 receive and transmit performance and
reduce CPU utilization.
To enable or disable the IPv4 Checksum Offload feature, do the following:
1. Access the Advanced Properties.
2. Select IPv4 Checksum Offload in the Property box.
The IPv4 Checksum Offload page is displayed as shown in Figure 30.
Figure 30. IPv4 Checksum Offload Page
3. Select one of the following options:
Disabled — The CPU verifies IPv4 checksum.
Rx & Tx Enabled — The ExpressCard verifies IPv4 Checksum for
both receiving and transmitting packets. This is the default setting.
Rx Enabled — The ExpressCard verifies IPv4 Checksum only for
receiving packets.
Tx Enabled — The ExpressCard verifies IPv4 Checksum only for
transmitting packets.
4. Click OK.
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Chapter 4: Modifying Advanced Properties
Jumbo Packet
The Jumbo Packet feature allows you to specify the size of the Ethernet
frame that the adapter supports. The network performance usually
improves when the larger frame size is specified; however, the network
must be capable of supporting the oversized Ethernet frames.
To change the Jumbo Packet setting, do the following:
1. Access the Advanced Properties.
2. Select Jumbo Packet in the Property box.
The Jumbo Packet page is displayed as shown in Figure 31.
Figure 31. Jumbo Packet Page
3. Select one of the following options:
1514 Bytes — This is the default setting.
4088 Bytes
9014 Bytes
4. Click OK.
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
Large Send Offload (IPv4)
The Large Send Offload (IPv4) feature allows you to control the load of
sending out large packets. When this feature is enabled, the adapter
segments large packets and reduces the CPU load.
The Large Send Offload (IPv4) feature supports packets up to 64kb. The
Large Send Offload v2 (IPv4), which supports packets up to 256kb,
overrides the Large Send Offload (IPv4) feature if both features are
enabled. For more information, see “Large Send Offload v2 (IPv4)” on
Note
Windows XP does not support the Large Send Offload v2 (IPv4).
To enable or disable the Large Send Offload (IPv4) feature, do the
following:
1. Access the Advanced Properties.
2. Select Large Send Offload (IPv4) in the Property box.
The Large Send Offload (IPv4) page is displayed as shown in
Figure 32.
Figure 32. Large Send Offload (IPv4) Page
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Chapter 4: Modifying Advanced Properties
3. Select one of the following options:
Disabled— This feature is disabled.
Enabled — The adapter segments large packets up to 64kb for
IPv4 traffic before sending them out. This is the default setting.
4. Click OK.
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
Large Send Offload v2 (IPv4)
The Large Send Offload v2 (IPv4) feature allows you to control the load of
sending out large packets. When this feature is enabled, the adapter
segments large packets for IPv4 traffic and reduces the CPU load.
This feature, which supports large packets up to 256kb, overrides the
Large Send Offload (IPv4) feature if both features are enabled.
To enable or disable the Large Send Offload v2 (IPv4) feature, do the
following:
1. Access the Advanced Properties.
2. Select Large Send Offload v2 (IPv4) in the Property box.
The Large Send Offload v2 (IPv4) page is displayed as shown in
Figure 33.
Figure 33. Large Send Offload v2 (IPv4) Page
3. Select one of the following options:
Disabled — The feature is disabled.
Enabled — The adapter segments large packets up to 256kb for
IPv4 traffic before sending them out. This is the default setting.
4. Click OK.
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Chapter 4: Modifying Advanced Properties
Large Send Offload v2 (IPv6)
The Large Send Offload v2 (IPv6) feature allows you to control the load of
sending out large packets. When this feature is enabled, the adapter
segments large packets for IPv6 traffic and reduces the CPU load.
To enable or disable the Large Send Offload v2 (IPv6) feature, do the
following:
1. Access the Advanced Properties.
2. Select Large Send Offload v2 (IPv6) in the Property box.
The Large Send Offload v2 (IPv6) page is displayed as shown in
Figure 34.
Figure 34. Large Send Offload (IPv6) Page
3. Select one of the following options:
Disabled — The adapter does not segment packets for IPv6
traffic.
Enabled — The adapter segments large packets up to 256kb for
IPv6 traffic before sending them out. This is the default setting.
4. Click OK.
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
Log Status Messages
The Log Status Messages property allows you to select messages that the
driver generates.
To change the Log Status Messages, do the following:
1. Access the Advanced Properties.
2. Select Log Status Messages in the Property box.
Figure 35. Log Status Message Page
3. Select one of the following options:
None — The adapter does not generate any messages.
Errors — The adapter generates only error messages.
Warnings — The adapter generates only warning messages.
Status Messages— The adapter generates an event log entry
every time the link status changes. This is the default setting.
All Messages — The adapter generates all messages. This option
is for test purposes only.
4. Click OK.
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Chapter 4: Modifying Advanced Properties
Max IRQ per Sec
The Max IRQ per Sec property specifies the interrupt rate for Interrupt
To change the Max IRQ per Sec value, do the following:
1. Access the Advanced Properties.
2. Select Max IRQ per Sec in the Property box.
The Max IRQ per Sec page is displayed as shown in Figure 36.
Figure 36. Max IRQ per Sec Page
3. Specify the Max IRQ per Sec value.
The range of the value is from 1000 to 30000. The default value is
5000.
4. Click OK.
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
Network Address
The Network Address property allows you to replace the MAC address
originally assigned to the adapter with a user-defined address.
Caution
The network address overrides the original MAC address stored in
the AT-2874SX ExpressCard. When you change the MAC address,
ensure that a unique MAC address is assigned.
To assign or change the Network Address, do the following:
1. Access the Advanced Properties.
2. Select Network Address in the Property box.
The Network Address page is displayed as shown in Figure 37.
Figure 37. Network Address Page
3. In the Value text box, enter a user-defined address for the AT-2874SX
ExpressCard.
By default, no user-defined address is assigned.
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Chapter 4: Modifying Advanced Properties
Here are guidelines for assigning a user-defined address:
The address must be unique.
The address consists of a 12-digit hexadecimal number, for
example, “020C46005501.”
The address must start with “02” in the most significant byte, for
example, “020304050607.”
Do not assign “0000 0000 0000” or “FFFF FFFF FFFF.”
The range is from 0200 0000 0000 to 02FF FFFF FFFF.
4. Click OK.
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
Receive Buffers
The Receive Buffers property specifies the number of packet receive
buffers allocated for the adapter. Increasing this value may enhance
performance in receiving traffic, but consumes more system memory.
To change the Receive Buffers value, do the following:
1. Access the Advanced Properties.
2. Select Receive Buffers in the Property box.
The Receive Buffers page is displayed as shown in Figure 38.
Figure 38. Receive Buffers Page
3. Specify 256 or 512.
The value is an increment of 256 and the range is from 256 to 512.
The default value is 256.
4. Click OK.
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Chapter 4: Modifying Advanced Properties
Receive Side Scaling
The Receive Side Scaling (RSS) feature allows the adapter to efficiently
distribute receive processing across multiple CPU’s and to prevent from
overloading a single CPU. To make this feature effective, the computer
must have multiple CPU’s in a multiprocessor system.
To enable or disable the Receive Side Scaling feature, do the following:
1. Access the Advanced Properties.
2. Select Receive Side Scaling in the Property box.
The Receive Side Scaling page is displayed as shown in Figure 39.
Figure 39. Receive Side Scaling Page
3. Select one of the following options:
Enabled — Receiving data is processed by multiple CPU’s.
Disabled — Receiving data is processed by a single CPU. This is
the default setting.
4. Click OK.
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
Speed & Duplex
The Speed & Duplex property is not supported for the AT-2874SX
ExpressCard.
Note
You see the Speed & Duplex property as shown in Figure 40 when
the proper Allied Telesis driver is not installed. To install driver
Figure 40. Speed & Duplex Page
If you want to use the currently installed driver, the property must be set to
Auto Negotiation.
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Chapter 4: Modifying Advanced Properties
TCP/UDP Checksum Offload (IPv4)
The TCP/UDP Checksum Offload (IPv4) function enables the adapter to
compute the TCP and UDP checksums of transmitting packets and verify
the TCP and UDP checksums of receiving packets in order to take load off
from the CPU.
To modify the TCP/UDP Checksum Offload (IPv4) setting, do the
following:
1. Access the Device Manager on your operating system.
2. Select TCP/UDP Checksum Offload (IPv4) in the Property box.
The TCP/UDP Checksum Offload (IPv4) page is displayed as shown in
Figure 41. TCP/UDP Checksum Offload (IPv4) Page
3. Select one of the following options:
On — The feature is enabled.This is the default setting.
Off — The feature is disabled.
4. Click OK.
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TCP Checksum Offload (IPv4)
The TCP Checksum Offload (IPv4) function enables the adapter to
compute the TCP checksum of transmitting IPv4 packets and verify the
TCP checksum of receiving IPv4 packets in order to take load off from the
CPU.
To modify the TCP Checksum Offload (IPv4) setting, do the following:
1. Access the Device Manager on your operating system.
2. Select TCP Checksum Offload (IPv4) in the Property box.
The TCP Checksum Offload (IPv4) page is displayed as shown in
Figure 42.
Figure 42. TCP Checksum Offload (IPv4) Page
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Chapter 4: Modifying Advanced Properties
3. Select one of the following options:
Rx & Tx Enabled — Enables the feature for both receiving and
transmitting IPv4 packets. This is the default setting.
Disabled — Disables the feature for both receiving and
transmitting.
Rx Enabled — Enables the feature only for receiving IPv4
packets.
Tx Enabled — Enables the feature only for transmitting IPv4
packets.
4. Click OK.
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
TCP Checksum Offload (IPv6)
The TCP Checksum Offload (IPv6) function enables the adapter to
compute the TCP checksum of transmitting IPv6 packets and verify the
TCP checksum of receiving IPv6 packets in order to load off from the
CPU.
To enable or disable the TCP Checksum Offload (IPv6) feature, do the
following:
1. Access the Device Manager on your operating system.
2. Select TCP Checksum Offload (IPv6) in the Property box.
The TCP Checksum Offload (IPv6) page is displayed as shown in
Figure 43.
Figure 43. TCP Checksum Offload (IPv6) Page
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Chapter 4: Modifying Advanced Properties
3. Select one of the following options:
Rx & Tx Enabled — Enables the feature for both receiving and
transmitting IPv6 packets. This is the default setting.
Disabled — Disables the feature for both receiving and
transmitting.
Rx Enabled — Enables the feature only for receiving IPv6
packets.
Tx Enabled — Enables the feature only for transmitting IPv6
packets.
4. Click OK.
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
Transmit Buffers
The Transmit Buffers property specifies the number of packet transmit
buffers allocated for the adapter.
To change the Transmit Buffers value, do the following:
1. Access the Device Manager on your operating system.
2. Select Transmit Buffers in the Property box.
The Transmit Buffers page is displayed as shown in Figure 44.
Figure 44. Transmit Buffers Page
3. Specify the number of transmit buffers that you want the system
allocates.
The range of the value is from 100 to 600. The default value is 500.
4. Click OK.
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Chapter 4: Modifying Advanced Properties
UDP Checksum Offload (IPv4)
The UDP Checksum Offload (IPv4) function enables the adapter to
compute the UDP checksum of transmitting IPv4 packets and verify the
UDP checksum of receiving IPv4 packets in order to take load off from the
CPU.
To modify the UDP Checksum Offload (IPv4) setting, do the following:
1. Access the Device Manager on your operating system.
2. Select UDP Checksum Offload (IPv4) in the Property box.
The UDP Checksum Offload (IPv4) page is displayed as shown in
Figure 45. UDP Checksum Offload (IPv4) Page
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
3. Select one of the following options:
Rx & Tx Enabled — Enables the feature for both receiving and
transmitting IPv4 packets. This is the default setting.
Disabled — Disables the feature for both receiving and
transmitting.
Rx Enabled — Enables the feature only for receiving IPv4
packets.
Tx Enabled — Enables the feature only for transmitting IPv4
packets.
4. Click OK.
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Chapter 4: Modifying Advanced Properties
UDP Checksum Offload (IPv6)
The UDP Checksum Offload (IPv6) function enables the adapter to
compute the UDP checksum of transmitting IPv6 packets and verify the
UDP checksum of receiving IPv6 packets in order to take load off from the
CPU.
To modify the UDP Checksum Offload (IPv6) setting, do the following:
1. Access the Device Manager on your operating system.
2. Select UDP Checksum Offload (IPv6) in the Property box.
The UDP Checksum Offload (IPv6) page is displayed as shown in
Figure 46. UDP Checksum Offload (IPv6) Page
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
3. Select one of the following options:
Rx & Tx Enabled — Enables the feature for both receiving and
transmitting IPv6 packets. This is the default setting.
Disabled — Disables the feature for both receiving and
transmitting.
Rx Enabled — Enables the feature only for receiving IPv6
packets.
Tx Enabled — Enables the feature only for transmitting IPv6
packets.
4. Click OK.
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Chapter 4: Modifying Advanced Properties
Wake on Magic Packet
The Wake on Magic Packet property is not supported for the AT-2874SX
ExpressCard.
Note
You see the Wake on Magic Packet property as shown in Figure 47
when the proper Allied Telesis driver is not installed. To install driver
software properly, see Chapter 3, “Installing the Driver Software” on
Figure 47. Wake on Magic Packet Page
If you want to use the currently installed driver, the property must be set to
Disabled.
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
Wake on Pattern Match
The Wake on Pattern Match property is not supported for the AT-2874SX
ExpressCard.
Note
You see the Wake on Pattern Match property as shown in Figure 48
when the proper Allied Telesis driver is not installed. To install driver
Figure 48. Wake on Pattern Match Page
If you want to use the currently installed driver, the property must be set to
Disabled.
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Appendix A
Specifications
Physical Specification
Dimensions:
13.7 cm x 3.4 cm (5.4 in. x 1.3 in.)
Environmental Specifications
Operating Temperature:
0°C to 40°C (32°F to 104°F)
-25°C to 70°C (-13°F to 158°F)
5% to 90% (non-condensing)
Up to 3,048 m (10,000 ft.)
Storage Temperature:
Relative Humidity:
Altitude:
Power Specification
Power Consumption:
3.3W
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
Overview
The fiber optic connector consists of a fiber optic plug and its adapter. The
end of the fiber optic cable is held in the core of the ferrule in the plug as
fiber.
Ferrule
Figure 49. Ferrule in an SC Connector Plug
Even minor smudges or dirt on the end face of the fiber, completely
invisible to the naked eye, can disrupt light transmission and lead to failure
face of an unclean and clean ferrule.
Unclean
Clean
Figure 50. Unclean and Clean Ferrule
Guidelines Here are general guidelines and warnings for fiber optic connectors:
Always keep a dust cap on a fiber optic cable when it is not in use.
Do not touch the end face of the ferrule in the connector.
Warning
Do not stare into the laser beam. 2
Warning
Do not look directly at the cable ends or inspect the cable ends with
an optical lens. 31
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Appendix B: Cleaning Fiber Optic Connectors
Cleaning Using a Cartridge-Type Cleaner
Fiber optic cartridge cleaners are available from many vendors and are
typically called “cartridge cleaners,” as shown in Figure 51.
Figure 51. Cartridge Cleaner
Note
Do not use compressed air or aerosol air to clean a fiber optic
connector.
To clean a fiber optic connector using a cartridge cleaner, perform the
following procedure:
1. With one hand, hold the cartridge cleaner and push the lever on the
cleaning cartridge in the direction of the arrow to expose the cleaning
surface, as shown in Figure 52.
Figure 52. Rubbing the Ferrule Tip on the Cleaning Surface
2. Place the ferrule tip on the exposed cleaning surface and rub the
ferrule in a downward direction, as shown in Figure 52.
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
Note
Rub the ferrule tip on the cleaning surface in one direction only.
3. When you reach the end of the cleaning surface, pick up the ferrule tip,
rotate and place it at the top and rub downwards at least 2 times.
Caution
Failing to pick up the ferrule tip when you reach the bottom of the
cleaning surface can result in static electricity that can damage the
fiber optic cable.
5. If a fiber inspection scope is available, use the scope to inspect the
ferrule end face to make sure that it is clean.
6. Reconnect the cable to the port or protect the ferrule tip with a dust
cap.
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Appendix B: Cleaning Fiber Optic Connectors
Cleaning Using a Swab
Specially treated swabs (stick cleaners) are available for cleaning inside
connector adapters or hard-to-reach ferrule tips. These swabs, often
referred to as “lint free” or “alcohol free” swabs, are available from many
vendors. See Figure 53. Stick cleaners are available in both 2.5 mm and
1.25 mm sizes for use on SC and MU connectors respectively.
Note
NEVER use a household cotton swab and/or alcohol to clean a fiber
optic connector. A cotton swab or alcohol may leave a residue on
the ferrule tip.
Figure 53. Lint-Free and Alcohol-Free Swabs
Note
Do not use compressed air or aerosol air to clean a fiber optic
connector.
To clean a recessed ferrule using a swab, perform the following
procedure:
ferrule tip with the swab.
Figure 54. Cleaning a Recessed Ferrule
2. If desired, repeat step 1.
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AT-2874SX Gigabit Ethernet Fiber ExpressCard Installation and User’s Guide
3. If a fiber inspection scope is available, use the scope to inspect the
connector to make sure that it is clean.
4. Reconnect the cable to the port or protect the ferrule tip with a dust
cap.
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