D-Link DFE-550TX User manual

Model DFE-550TX
Ethernet / Fast Ethernet
Adapter for PCI Bus
with WOL
User’s Guide
Rev. 04 Sep. 2000
6DFE550TX.04
Printed in Taiwan
RECYCLABLE

D-Link DFE-550TX Adapter
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Copyright Statement
No part of this publication may be reproduced in any form or by any means or
used to make any derivative such as translation, transformation, or adaptation
without permission from D-Link Corporation / D-Link Systems Inc., as
stipulated by the United States Copyright Act of 1976.
FCC Certifications
This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to Part 15 of the 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 the instructions, may cause harmful interference
to radio communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does 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 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.
Shielded interface cables must be used in order to comply with emission limits.
You are cautioned that changes or modifications not expressly approved by the party
responsible for compliance could void your authority to operate the equipment.
This device complies with Part 15 of the FCC rules. Operation is subject to the
following two conditions: (1) This device may not cause harmful interference, and (2)
This device must accept any interference received, including interference that may
cause undesired operation.
VCCI B Warning

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Limited Warranty
Hardware:
D-Link warrants each of its hardware products to be free from defects in workmanship
and materials under normal use and service for a period commencing on the date of
purchase from D-Link or its Authorized Reseller and extending for the length of time
stipulated by the Authorized Reseller or D-Link Branch Office nearest to the place of
purchase.
This Warranty applies on the condition that the product Registration Card is filled out
and returned to a D-Link office within ninety (90) days of purchase. A list of D-Link
offices is provided at the back of this manual, together with a copy of the Registration
Card.
If the product proves defective within the applicable warranty period, D-Link will
provide repair or replacement of the product. D-Link shall have the sole discretion
whether to repair or replace, and replacement product may be new or reconditioned.
Replacement product shall be of equivalent or better specifications, relative to the
defective product, but need not be identical. Any product or part repaired by D-Link
pursuant to this warranty shall have a warranty period of not less than 90 days, from
date of such repair, irrespective of any earlier expiration of original warranty period.
When D-Link provides replacement, then the defective product becomes the property
of D-Link.
Warranty service may be obtained by contacting a D-Link office within the applicable
warranty period, and requesting a Return Material Authorization (RMA) number. If a
Registration Card for the product in question has not been returned to D-Link, then a
proof of purchase (such as a copy of the dated purchase invoice) must be provided. If
Purchaser's circumstances require special handling of warranty correction, then at the
time of requesting RMA number, Purchaser may also propose special procedure as
may be suitable to the case.
After an RMA number is issued, the defective product must be packaged securely in
the original or other suitable shipping package to ensure that it will not be damaged in
transit, and the RMA number must be prominently marked on the outside of the
package. The package must be mailed or otherwise shipped to D-Link with all costs
of mailing/shipping/insurance prepaid. D-Link shall never be responsible for any
software, firmware, information, or memory data of Purchaser contained in, stored on,
or integrated with any product returned to D-Link pursuant to this warranty.
Any package returned to D-Link without an RMA number will be rejected and
shipped back to Purchaser at Purchaser's expense, and D-Link reserves the right in
such a case to levy a reasonable handling charge in addition mailing or shipping costs.

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Software:
Warranty service for software products may be obtained by contacting a D-Link office
within the applicable warranty period. A list of D-Link offices is provided at the back
of this manual, together with a copy of the Registration Card. If a Registration Card
for the product in question has not been returned to a D-Link office, then a proof of
purchase (such as a copy of the dated purchase invoice) must be provided when
requesting warranty service. The term "purchase" in this software warranty refers to
the purchase transaction and resulting license to use such software.
D-Link warrants that its software products will perform in substantial conformance
with the applicable product documentation provided by D-Link with such software
product, for a period of ninety (90) days from the date of purchase from D-Link or its
Authorized Reseller. D-Link warrants the magnetic media, on which D-Link provides
its software product, against failure during the same warranty period. This warranty
applies to purchased software, and to replacement software provided by D-Link
pursuant to this warranty, but shall not apply to any update or replacement which may
be provided for download via the Internet, or to any update which may otherwise be
provided free of charge.
D-Link's sole obligation under this software warranty shall be to replace any defective
software product with product which substantially conforms to D-Link's applicable
product documentation. Purchaser assumes responsibility for the selection of
appropriate application and system/platform software and associated reference
materials. D-Link makes no warranty that its software products will work in
combination with any hardware, or any application or system/platform software
product provided by any third party, excepting only such products as are expressly
represented, in D-Link's applicable product documentation as being compatible.
D-Link's obligation under this warranty shall be a reasonable effort to provide
compatibility, but D-Link shall have no obligation to provide compatibility when there
is fault in the third-party hardware or software. D-Link makes no warranty that
operation of its software products will be uninterrupted or absolutely error-free, and
no warranty that all defects in the software product, within or without the scope of
D-Link's applicable product documentation, will be corrected.
D-Link Offices for Registration and Warranty
Service
The product's Registration Card, provided at the back of this manual, must be sent to a
D-Link office. To obtain an RMA number for warranty service as to a hardware
product, or to obtain warranty service as to a software product, contact the D-Link
office nearest you. An address/telephone/fax/e-mail/Web site list of D-Link offices is
provided in the back of this manual.

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LIMITATION OF WARRANTIES
IF THE D-LINK PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE, THE
CUSTOMER'S SOLE REMEDY SHALL BE, AT D-LINK'S OPTION, REPAIR OR
REPLACEMENT. THE FOREGOING WARRANTIES AND REMEDIES ARE
EXCLUSIVE AND ARE IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR
IMPLIED, EITHER IN FACT OR BY OPERATION OF LAW, STATUTORY OR
OTHERWISE, INCLUDING WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE. D-LINK NEITHER ASSUMES NOR
AUTHORIZES ANY OTHER PERSON TO ASSUME FOR IT ANY OTHER
LIABILITY IN CONNECTION WITH THE SALE, INSTALLATION
MAINTENANCE OR USE OF D-LINK'S PRODUCTS
D-LINK SHALL NOT BE LIABLE UNDER THIS WARRANTY IF ITS TESTING
AND EXAMINATION DISCLOSE THAT THE ALLEGED DEFECT IN THE
PRODUCT DOES NOT EXIST OR WAS CAUSED BY THE CUSTOMER'S OR ANY
THIRD PERSON'S MISUSE, NEGLECT, IMPROPER INSTALLATION OR
TESTING, UNAUTHORIZED ATTEMPTS TO REPAIR, OR ANY OTHER CAUSE
BEYOND THE RANGE OF THE INTENDED USE, OR BY ACCIDENT, FIRE,
LIGHTNING OR OTHER HAZARD
LIMITATION OF LIABILITY
IN NO EVENT WILL D-LINK BE LIABLE FOR ANY DAMAGES, INCLUDING
LOSS OF DATA, LOSS OF PROFITS, COST OF COVER OR OTHER INCIDENTAL,
CONSEQUENTIAL OR INDIRECT DAMAGES ARISING OUT THE
INSTALLATION, MAINTENANCE, USE, PERFORMANCE, FAILURE OR
INTERRUPTION OF A D- LINK PRODUCT, HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY. THIS LIMITATION WILL APPLY EVEN IF D-LINK HAS
BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
IF YOU PURCHASED A D-LINK PRODUCT IN THE UNITED STATES, SOME
STATES DO NOT ALLOW THE LIMITATION OR EXCLUSION OF LIABILITY
FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE
LIMITATION MAY NOT APPLY TO YOU.

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Table of Contents
INTRODUCTION........................................................................1
ACPI POWER MANAGEMENT ...................................................... 1
WAKE ON LAN .......................................................................... 1
FLOW CONTROL.......................................................................... 2
IP MULTICASTING....................................................................... 2
DMI/DESKTOP MANAGEMENT INTERFACE................................... 3
IEEE802.1P PRIORITY TAGGING.................................................. 3
IEEE802.1Q VLANS.................................................................. 4
PRODUCT FEATURES ................................................................... 4
INSTALLATION.........................................................................6
UNPACKING................................................................................ 6
INSTALLING THE ADAPTER .......................................................... 6
CONNECTING THE WOL CABLE................................................... 7
CONNECTING THE NETWORK CABLE............................................ 8
Connecting for 100Mbps Fast Ethernet................................... 9
Connecting for 10Mbps Ethernet............................................. 9
SOFTWARE INSTALLATION......................................................... 10
VERIFICATION/DIAGNOSTIC PROGRAM ...................................... 10
Adapter Function Test .......................................................... 11
Network Operation Test........................................................ 12
TROUBLESHOOTING............................................................. 13
SPECIFICATIONS.................................................................... 14

D-Link DFE-550TX Adapter
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Introduction
Thank you for choosing the D-Link DFE-550TX - the value leader
among Fast Ethernet adapters for the PCI-Bus. This introduction
gives a general description of the newer networking technologies
found on the DFE-550TX.
ACPI Power Management
The DFE-550TX adapter complies with the Advanced
Configuration and Power Interface 1.0 (ACPI) specifications. ACPI
is a new open industry specification providing power management
support systems through hardware and operating system
cooperation. The DFE-550TX can reduce power consumption by
entering Sleep mode along with the host computer. Although in
Sleep mode, the network interface card (NIC) will continue to
monitor the LAN looking for wake-up packets.
Wake On LAN
Wake On LAN (WOL) is an ACPI function allowing a powered
down (sleeping) computer to be powered ON from a remote station.
To use the WOL feature, the NIC must be WOL capable and the
motherboard of the PC must be ACPI compliant.
While powered-down computers Sleep, WOL enabled NICs
monitor LAN traffic for valid Wake-up frames. When one is
received, the NIC will immediately wake-up and send a signal to
the motherboard to power ON the computer.
Some uses for the WOL feature include:
•Forgot a document and out of town? Send a Wake-up signal
to your computer and retrieve the needed file.

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•Initiate long routines and reports before you get to work.
•Transfer files when the network traffic is low (during late
hours).
•Power ON your PC before you arrive to work.
•The MIS department can upgrade software on computers
after hours from a remote station.
WOL is very helpful in limiting the power consumption of PCs,
workstations, and kiosks.
Flow Control
The DFE-550TX implements IEEE 802.3x compliant flow control
for full duplex, which provides traffic management functions for
full-duplex operation. Flow control allows for enhanced full duplex
operation with switches. When operating at full duplex (requiring
a direct connection to a switch) and the switch’s data buffer is
about to overflow, a Pause frame will be transmitted to the DFE-
550TX. The ensuing idle time keeps the buffer from overflowing
and prevents data from being lost. This enhancement can improve
network throughput, avoid collisions and prevent lost data,
helping the network achieve optimal performance.
IP Multicasting
The DFE-550TX uses chip-level address filtering when
implementing IP Multicasting (defined in RFC 1112). This
hardware-based implementation provides a huge performance
increase over other interface cards. Formerly, broadcast packets
were used for multicasting, but they are a less than ideal solution
for transmitting packets to groups. This is because broadcast
packets reach every terminal on the network, creating undue
traffic and occupying CPU time on all computers.
IP Multicasting is a much better way to send data to groups,

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especially since routers and even switches can filter packets so
they only reach those stations that are part of the group. The
DFE-550TX goes one step further by examining multicast packets
on the card itself (rather than using the computer’s CPU) and only
accepting those packets for the group(s) in which the host belongs,
thus conserving CPU utilization.
This can be very useful since more and more multicast data, such
as corporate messages to employees, stock quotes, video and audio
conferencing, and database replication is transmitted on today’s
networks.
IP Multicasting can eliminate an organization's need to maintain
parallel networks for voice, video and data.
DMI/Desktop Management Interface
DMI is an Operating System/Network Operating System-
independent management framework that allows system vendors
to support multiple market/customer segments with a single
management strategy. DMI lowers the Total Cost of Ownership
(TCO) by providing a common framework for managing desktop
systems, mobile systems and servers.
DMI supports a management schema (Management Information
Format [MIF]), allowing manageable components to be described
within various platforms in a standard descriptive language. MIFs
are extensible, allowing the DFE-550TX to export value-added
management capabilities. These value-added management
features enable remote troubleshooting and higher quality
management of computer resources.
IEEE802.1p Priority Tagging
With the growing number of network applications, local area
networks (LANs) must deliver data for a wide variety applications.
Email, file transfers, database queries, voice over IP (VoIP), video-

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conferencing and multimedia must all be delivered to the end-
user’s. Some of the traffic, such as video-conferencing, is of a
higher priority, with a slight delay of packets resulting in
noticeable degeneration of video and audio quality, while other
traffic, such as email will not be noticeably affected by tiny delays.
The large number of programs run over today’s networks serves to
impede the ability to deliver time-critical data. Even if bandwidth
is not usually a problem on your network, during peak hours
bursts in network traffic can result in the delay of time-critical
traffic.
IEEE802.1p defines seven levels of prioritization for Ethernet
packets. High priority packets will be sent through a network
using 802.1p-compliant switches first. Lower priority packets will
be transferred whenever bandwidth is available. When properly
setup, this ensures that time-critical data arrives on time and is
not affected by other traffic.
IEEE802.1Q VLANs
The IEEE802.1Q VLAN can help improve network performance
and security by segmenting the network into VLANs. IEEE802.1Q
VLANs can limit broadcast and node-to-node (unicast) traffic to a
single VLAN. This limits the effects of broadcast storms and
provides additional security for your network.
To set up GVRP VLANs, which support dynamic registration, the
adapter should be connected to a switch with GVRP VLAN
capability.
For VLANs to function, the computer in which this NIC is
installed must be using Windows 95 or later as its operating
system.
Product Features
Designed for high performance and versatility, the DFE-550TX

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Adapter provides the following features:
•Plug and Play installation.
•Complies with the IEEE 802.3 10Base-T and 802.3u 100Base-TX Ethernet
standards.
•RJ-45 connector for standard network cable connection.
•100Mbps Fast Ethernet or 10Mbps Ethernet data transfer rates, automatically
configured by NWay auto-negotiation.
•Full duplex or half-duplex operation, also NWay configured.
•PCI Bus Master direct memory access for high throughput and low CPU
utilization.
•ACPI 1.0 power management compliant.
•Wake-On-LAN power-saving feature allows sleeping PCs to be woken up and
used via remote stations.
•IEEE 802.3x Flow Control enabled with full duplex operation, allowing
enhanced operation when directly connected to a switch.
•IEEE 802.1Q/VLAN Tagging supported
•VLAN registration using IEEE802.1Q GVRP standard
•IEEE 802.1p Tagging supported
•IP Multicast packet filtering reduces CPU utilization and conserves network
bandwidth.
•Sixteen packet counters provide a full range of network management statistics.
•DL10050B D-Link’s own 32-bit intelligent Ethernet controller.
•Large 2Kb Tx, 2Kb Rx FIFO buffers synchronize transmissions and buffer data
to help prevent packet loss.
•Three LED indicators: Link/Act, Speed (10/100), Full/Half Duplex.
•Drivers for all leading Network Operating Systems.

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Installation
Installation of the DFE-550TX 10/100 NWay Ethernet Adapter
requires installing the hardware first. Once the interface card has
been installed into the host computer, the software can be installed.
Unpacking
CAUTION:Under ordinary circumstances, a DFE-550TX interface
card will not be affected by static electricity. However, it
is good practice to eliminate static charges by touching
a sizable metal object before handling the adapter card.
Open the shipping carton and carefully remove all items. In
addition to this User's Guide, ascertain that you have:
•One DFE-550TX Ethernet Adapter Card.
•DFE-550TX Software CD-ROM.
•WOL Cable.
•Multi Language Installation Guide
Installing the Adapter
1. Shut down the computer, unplug its power cord, and remove
the cover.
2. If your order does not include the Boot ROM option, go ahead to
Step 3. If your order includes the Boot ROM option, then
install the Boot ROM Chip by plugging the chip into the Boot
ROM Socket on the DFE-550TX card. The notched end of the
Boot ROM Chip must be aligned with the notched end of the
Boot ROM Socket. Opposite alignment will destroy the Boot
ROM Chip!

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3. Firmly insert the contact edge of the DFE-550TX card into any
available PCI Bus expansion slot.
4. Install the bracket screw to secure the card to the computer
chassis.
5. At this point, refer to section Connecting the WOL Cable to
install the WOL Cable between the NIC and the PC
motherboard.
6. Replace the computer cover.
7. Reconnect the computer power cord, and switch the computer
power on. If the BIOS section of your computer boot program is
Plug and Play compliant, then at power-up the BIOS will
automatically configure itself for the newly installed DFE-
550TX adapter.
NOTE: Due to a fault in some Plug-n-Play BIOS programs, it
happens occasionally that a newly installed adapter is
assigned an IRQ Number which is already assigned to
another device. In such a case, the conflicting IRQ Numbers
(IRQ numbers must be unique) will cause faults in the
behavior of both devices. If this happens, it is necessary to
run the CMOS Setup utility, and manually assign a non-
conflicting Interrupt Number to the DFE-550TX.
Connecting the WOL Cable
The WOL Cable†is an interconnect cable with standard 3-pin
connectors on each end. Please follow the procedures listed
below to ensure proper installation of the WOL cable.
†The WOL Cable is an optional component of your DFE-550TX kit. If a cable is not
included in your kit, purchase the cable through your local computer retailer.

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1. Connect either end connector of the WOL Cable to the
NIC WOL Connector. Both ends of the WOL Cable are
identical, so either end may be used.
2. Examine the PC motherboard and/or refer to the manual
for the motherboard to locate the corresponding WOL
Connector on the motherboard. The actual location is
system dependent, but the motherboard may have a label
beside the WOL Connector. After you have located the
WOL connector on the motherboard, connect the cable.
3. Power-ON the PC and press <Delete> or <F1> when
prompted to enter the PCI/ISA BIOS CMOS Setup.
Enable the WOL function or the power-ON function of
the PC. The name of this function is system dependent,
but may be located in a category heading titled
something like Power Management. Refer to your
computer’s manual for more information regarding the
CMOS Setup Utility and BIOS settings.
NOTE: If your system’s motherboard WOL Connector does not fit the
WOL Cable or does not have 3 pins, do not attempt to force a
connection or alter the components to fit. Doing so could
permanently damage your computer.
Connecting the Network Cable
Category 5 UTP cable qualifies for both 100BASE-TX Fast Ethernet
and 10BASE-T Ethernet cabling rules. The maximum length of any
single cable segment is 100 meters. Please keep in mind, however,
that the maximum cable run between any two stations in a collision
domain is 205m.

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Connecting for 100Mbps Fast Ethernet
Category 5 UTP cable is required for Fast Ethernet operation. The
maximum cable run between the DFE-550TX and the supporting
hub or switch is 100m. The cable must be straight-through (not a
crossover cable), with an RJ-45 plug at each end. Make the network
connection by plugging one end of the cable into the RJ-45 jack of
the DFE-550TX, and the other end into a normal (non-Uplink) port
on the supporting device.
Connecting for 10Mbps Ethernet
Category 3, Category 4, and Category 5 UTP cable, as well as
EIA/TIA-568 100-ohm STP cable all meet Ethernet cabling
requirements. The maximum cable run between the DFE-550TX
and the supporting hub or switch is 100 meters. The cable must be
straight-through (not a crossover cable) with an RJ-45 connector at
each end. Make the network connection by plugging one end of the
cable into the RJ-45 jack of the DFE-550TX, and the other end into
a normal (non-Uplink) port on the supporting device.
Note: The DFE-550TX will use NWay to automatically detect
whether it is connected at 10Mbps or 100Mbps and configure itself
accordingly. The duplex mode will likewise be auto-negotiated by
NWay at the same time, allowing the host computer to be up and
running on the network as soon as possible with a minimum of
trouble.

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Software Installation
On account of the great variety of network environments in which
the DFE-550TX may be used, the instructions for software
installation are given as README files on the DFE-550TX
Software CD-ROM. Review the root directory and locate the
subdirectory containing the appropriate software for use with your
network operating system. Access the README file for overview
information. For full installation details, see the README file and
the referenced instruction files in the sub-directory.
Verification/Diagnostic Program
This test program verifies configuration of the DFE-550TX as set by
the installation procedure, and assists with isolation of any faults in
operation. Verification and testing procedures are optional, and will
only be useful in the unusual event that there is a fault, such as an
interrupt number conflict among your computer expansion cards. If
your installation provides normal operation, you might choose to
skip these procedures.
The Verification/Diagnostic Program provides two levels of testing:
adapter function testing and network operation testing. Adapter
testing includes a variety of diagnostic procedures.
Adapter testing does not require substitution of a loopback cable.
All procedures of the Adapter test may be carried out with the
network cable connection in place.
For the network operation test, the cable connecting your station
with its supporting hub must be in place. Network testing involves
the broadcast transmission of test packets from the primary station.
The test cannot be fully implemented unless a second station on the
LAN is available to the network operation test, in order to return
the test packets to the primary station.
To run the Verification/Diagnostic Program, proceed with these
steps:

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Adapter Function Test
1. Insert the DFE-550TX Software CD-ROM in an available drive
(here shown as drive A). At the DOS prompt (here shown as >),
key in: > A:\DIAG.EXE
and <RETURN>. The opening screen of the Verification/
Diagnostic program will appear.
NOTE: Read the README.TXT, on the CD-ROM, to
choose the appropriate diagnostic program for your
operating system.
2. Review the reported configuration data before proceeding to
Step 3.
3. The Configuration Data screen also features a Diagnostic Menu.
Follow the cues at the foot of the screen to select and run the
Adapter Basic Diagnostic program. The adapter function test
results will appear onscreen. In the Loopback test, test signals
are intercepted and reflected at the MAC level without reaching
the network cable. If the results are normal, then go ahead to
the Network Operation test, starting with Step 4.

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Network Operation Test
4. If you have access to a second station on the LAN, then skip
ahead to Step 5. If you do not have access to a second station
on the LAN, then the network test will be limited to blind
transmission of test packets (none of which will be returned to
the primary station). Follow the cues at the foot of the screen
to select and run the Network Diagnostic program. Observe the
Packets Sent line to see a steadily and rapidly increasing packet
count. This will indicate normal transmission onto the LAN,
and will be the end of your Verification/Diagnostic run. Skip
the remaining steps shown below.
5. Remove the DFE-550TX Software CD-ROM from your station's
(the primary station's) CD-ROM drive, and insert it into an
available drive of a second station on your LAN. At the DOS
prompt (here shown as >), key in:
> A:\DIAG.EXE
and <RETURN>. The opening screen of the Diagnostic program
will appear onscreen at the second station. Follow the cues at
the foot of the screen to select and run the Network Test
program at the second station. The second station then begins
broadcasting test packets, and at the same time is also ready to
receive and return test signals transmitted from the primary
station newly installed DFE-550TX.
6. Return to the primary station and follow the cues at the foot of
the screen to select and run the Network Diagnostic program.
Observe the Packets Sent and Packets Received lines to see that
they track together (always showing equal count numbers),
which verifies normal network operation.
The most likely causes of failure for any of the diagnostic tests
are incorrect options settings, option settings that conflict with
the settings of other boards or improper installation. In the
event of any failure in diagnostic tests, refer to the
Troubleshooting section of this guide.

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Troubleshooting
If you experience any problems with the adapter, first verify that
the appropriate driver is loaded, that the proper grade of cable is
employed for the network connection, and that the supporting hub
is functioning properly.
1. Ascertain that the adapter card is fully and firmly seated in the slot
connector.
2. Check the length and rating of connecting cables.
3. Ascertain that the adapter PCI slot is not deactivated at the BIOS level.
The CMOS Setup utility in PCI computers ordinarily provides the
option to activate or deactivate PCI slots.
4. Replace the adapter in question with a verified adapter and run NIC
(software) diagnostic tests.
5. Install the questioned adapter in another PCI computer and run the
tests again.
6. Remove all other PCI adapters from the computer and run the tests
again. If the verification/diagnostic run is then normal, then there is
probably an interrupt number conflict which will have to be resolved
manually by a CMOS Setup utility run after you have reinstalled all of
the expansion cards.
The DFE-550TX Adapter features three LED indicators to assist in
network diagnostics:
•LINK/ACT Indicator
A steady green LED indicates that the card is receiving power and there
is a good link between the DFE-550TX and the device it is connected to.
The LED will flash when the adapter is sending or receiving data.
•100M Indicator
This LED shows steady green (ON) when operating at 100Mbps. It is
dark (OFF) when connected at 10Mbps.
•FULL (duplex) Indicator
This LED is ON for full duplex connections and OFF when connected at
half duplex.