3Com Network Card Network Ethernet Adapter User Manual

Troubleshooting  
Connect the USB Network Ethernet  
Adapter to the Computer  
Connect the USB Network Ethernet  
Adapter to the Ethernet Port  
1
3
This section offers answers to specific questions you may have  
during installation and setup. For additional information, contact  
3Com technical support. See “Support Resources” on the back side  
of this guide for detailed contact information.  
A.  
Insert the round connector on the USB cable into the  
USB port on the USB Network Ethernet Adapter  
Installation Guide  
CAUTION: Use only an Ethernet cable to make this  
connection. Inserting a telephone cable into the Ethernet  
port can damage either device  
Using the LEDs to Diagnose Problems  
USB Network Ethernet Adapter  
As shown below, the USB Network Ethernet Adapter has two light  
emitting diodes (LEDs). You can use these to diagnose installation  
and connection problems.  
A.  
B.  
C.  
Insert the Ethernet cable into the Ethernet port on  
the USB Network Ethernet Adapter.  
Note: The Ethernet cable is not included. See  
“Before You Begin” for more information.  
Part Number 09-2054-000  
100 LED  
Link/Activity LED  
B.  
Insert the flat connector on the USB cable into an  
available USB port on your computer.  
100  
Link/Act  
The following tables describes how to interpret the LED signal. The  
100 signal varies depending on the speed of the device that is  
connected to the USB Network Ethernet Adapter. If you detect a  
problem, contact 3Com technical support.  
Insert the other end of the Ethernet cable into an  
available Ethernet port on a broadband modem, hub,  
home gateway, or other Ethernet Internet device.  
Windows automatically detects the USB Ethernet  
Adapter and displays the New Hardware Found  
screen. Windows then prompts you to search for a  
driver.  
Note: If Windows does not automatically detect the  
device, click Windows Start, select Settings and then  
click Control Panel. Then click the Add/Remove  
Hardware icon and follow the on-screen prompts.  
Before You Begin  
You have just purchased the 3Com® USB Network Ethernet  
Adapter. The USB connection is the easiest way to connect a  
computer to a Broadband modem, Ethernet hub, home gateway,  
or any other Ethernet Internet device.  
C.  
See “Install the USB Network Ethernet Adapter  
Driver” for step-by-step instructions  
The installation is complete. To verify the IP address,  
see “Release and Renew the IP Address.”  
Frequently Asked Questions (FAQ)  
This section provides answers to frequently asked questions about  
installation and use of the USB Network Ethernet Adapter.  
Install the USB Network Ethernet  
Adapter Driver  
Please read this Installation Guide before you begin installation.  
If you have questions or problems during installation, see the  
“Troubleshooting” section.  
2
Q: How do I know if USB is enabled on the computer?  
A: Follow this procedure to verify that USB is enabled on your  
computer:  
Release and Renew the IP Address  
4
A.  
Insert the Installation disk into the floppy drive, and  
follow the on-screen prompts to install the driver file  
from the disk.  
Note: For more information about this procedure, consult  
the Microsoft documentation that came with the computer.  
Download Valuable Free Software  
(1) Right-click the My Computer icon on your Windows desktop,  
(2) Click Properties and then click the Device Manager tab (Win-  
dows 2000 users click the Hardware tab and then click Device  
Manager), (3) Double-click Universal Serial Bus Controller. If USB is  
enabled on your computer, Universal/Open Host Controller appears  
below this listing.  
3Com offers Preboot Execution Environment (PXE) software for  
this product. PXE allows a system administrator to manage the  
PC remotely, which reduces the number of support visits to the  
PC and can decrease total cost. PXE support for this product is  
available with 3Coms MBA on Disk. To download MBA on Disk  
for free and to obtain more information on PXE, go to:  
Windows automatically installs the driver.  
Windows 98/Me Users:  
Note: If Windows prompts you to restart the  
computer, follow the prompt to restart the computer.  
A. Click Windows Start and select Run.  
B. In the Open: field, type winipcfgand click OK.  
The IP Configuration screen appears.  
C. Select 3Com USB Network Ethernet Adapter from the  
drop-down menu.  
D. Click Release and then click Renew.  
Windows releases and renews the IP address.  
E.  
B.  
See “Connect the USB Network Ethernet Adapter to  
the Ethernet Port” to finish the installation.  
Q: Should the computer be powered off when I connect or  
disconnect the USB Network Ethernet Adapter?  
A: No, the power can remain on during installation.  
Then click Managed PC Boot Agent on Disk (MBA on Disk).  
Note: The illustration below shows one example of  
how the USB Network Ethernet Adapter is used to  
connect multiple devices on a home network.  
Exit the IP Configuration screen and return to the  
Windows desktop.  
Supplied and Required Items  
Q: What if I do not have an available USB port on the  
computer?  
A: If you do not have an available USB port on your computer, you  
can use a USB hub. A USB hub is a peripheral that expands the  
number of USB ports available to the computer.  
Review these lists of items to be sure you have everything ready  
to install the USB Network Ethernet Adapter.  
Windows 2000 Users:  
A. Click Windows Start and select Run.  
B. In the Open: field, type commandand click OK.  
An MS-DOS Prompt screen appears.  
C. At the C:\ prompt, type ipconfig /releaseand  
press Enter.  
Supplied:  
10/100* Mbps USB Network Ethernet Adapter  
Note: You must use a USB hub that is self-powered. The computer  
cannot provide sufficient power to run both the USB hub and the  
USB Network Ethernet Adapter.  
2 ft USB cable  
Installation diskette  
This Installation Guide  
Windows releases the IP address.  
D. Then type ipconfig /renewand press Enter.  
Windows renews the IP address.  
E.  
Q: How do I remove the USB Network Ethernet Adapter  
driver file or an incomplete installation?  
A: Follow this procedure to uninstall the driver file:  
2
3
* This adapter is compatible with 100Base-TX networks, but the  
throughput is based on the bandwith of USB 1.0/1.1.  
Exit the MS-DOS prompt and return to the Windows  
desktop.  
2
3
Required (Not Supplied):  
(1) From the Windows Start menu, select Settings and then Control  
Panel, (2) Double-click the Add/Remove Programs icon, (3) Click the  
Install/Uninstall tab and select 3Com USB Network Ethernet  
Adapter, (4) click Add/Remove (Windows 2000 users click Change/  
Remove) and then click Yes.  
Standard category 5 Ethernet cable with 2 male RJ-45  
connectors  
Computer running Microsoft® Windows® 98, Windows 2000  
Professional, or Windows Me operating system with:  
Available USB port  
66 MHz processor or higher  
Copyright 2001 3Com Corporation. All rights reserved. 3Com is a registered trademark, and the 3Com logo is a trademark of 3Com  
Corporation. Microsoft and Windows are registered trademarks of Microsoft Corporation. All other company and product names may be  
trademarks or registered trademarks of their respective companies.  
 

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