3Com Network Card 3CSOHO100 User Manual

Fast Ethernet  
Network Interface Card  
User Guide  
MODEL NO.  
3CSOHO100-TX  
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FDDILink, and Token Ring-in-Fast Ethernet Server  
network interface cards have a Lifetime Limited  
Warranty. For further details, please see 3Coms  
Limited Warranty statement in this guide.  
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®
OfficeConnect  
Fast Ethernet  
Network Interface Card  
User Guide  
Member of the 3Com OfficeConnect family  
Part No. 09-1569-000  
Published October 1998  
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3Com Corporation 5400 Bayfront Plaza Santa Clara, California 95052-8145  
Copyright © 1998, 3Com Corporation. All rights reserved. No part of this documentation may be  
reproduced in any form or by any means or used to make any derivative work (such as translation,  
transformation, or adaptation) without written permission from 3Com Corporation.  
3Com Corporation reserves the right to revise this documentation and to make changes in content  
from time to time without obligation on the part of 3Com Corporation to provide notification of such  
revision or change.  
3Com Corporation provides this documentation without warranty, term, or condition of any kind,  
either implied or expressed, including, but not limited to, the implied warranties, terms or conditions  
of merchantability, satisfactory quality, and fitness for a particular purpose. 3Com may make  
improvements or changes in the product(s) and/or the program(s) described in this documentation  
at any time.  
If there is any software on removable media described in this documentation, it is furnished under a  
license agreement included with the product as a separate document, in the hard copy documentation,  
or on the removable media in a directory file named LICENSE.TXT or !LICENSE.TXT. If you are unable to  
locate a copy, please contact 3Com and a copy will be provided to you.  
UNITED STATES GOVERNMENT LEGEND  
If you are a United States government agency, then this documentation and the software described  
herein are provided to you subject to the following:  
All technical data and computer software are commercial in nature and developed solely at private  
expense. Software is delivered as “Commercial Computer Software” as defined in DFARS 252.227-7014  
(June 1995) or as a “commercial item” as defined in FAR 2.101(a) and as such is provided with only such  
rights as are provided in 3Coms standard commercial license for the Software. Technical data is provided  
with limited rights only as provided in DFAR 252.227-7015 (Nov 1995) or FAR 52.227-14 (June 1987),  
whichever is applicable. You agree not to remove or deface any portion of any legend provided on any  
licensed program or documentation contained in, or delivered to you in conjunction with, this User Guide.  
Unless otherwise indicated, 3Com registered trademarks are registered in the United States and may or  
may not be registered in other countries.  
3Com, the 3Com logo, EtherDisk, and OfficeConnect are registered trademarks of 3Com  
Corporation. 3ComFacts is a service mark of 3Com Corporation.  
Banyan and VINES are trademarks of Banyan Systems, Incorporated. IBM is a registered trademark of  
International Business Machines Corporation. Microsoft, Windows, and Windows NT are trademarks  
of Microsoft Corp. Novell and NetWare are trademarks of Novell, Inc.  
All other company and product names may be trademarks of the respective companies with which they  
are associated.  
Guide written by Shelley Spackman. Edited by Nancy Kurahashi. Illustrated by Mary Inden. Produced by  
Georgi Felix.  
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CONTENTS  
ABOUT THIS GUIDE  
Conventions  
9
Year 2000 Compliance 10  
1 GETTING STARTED  
What This Guide Covers 11  
What This Chapter Covers 11  
Understanding Networking 12  
Peer-to-Peer Networks 13  
Client/Server Networks 14  
Ethernet and Fast Ethernet Networking Protocols 14  
Understanding Network Interface Cards 15  
About the OfficeConnect NIC 15  
Required Hardware 16  
Required Cabling 16  
Required Software 16  
2 INSTALLING THE NETWORK INTERFACE CARD  
Preparing for Installation 17  
Inserting the NIC 18  
Connecting the NIC to Your Network 20  
3 INSTALLING THE NETWORK DRIVER  
Windows 95 23  
Windows 95 Version A 24  
Windows 95 Version B 26  
Windows 98 28  
Windows NT 30  
Windows NT 4.0 30  
Windows NT 3.51 31  
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Verifying Successful Installation 32  
Windows 95 and Windows 98 32  
Windows NT 4.0 34  
Windows NT 3.51 34  
4 TROUBLESHOOTING INSTALLATION PROBLEMS  
Basic Troubleshooting Tips 35  
Interpreting the LEDs 36  
Starting the 3Com NIC Diagnostics Program 37  
Running the NIC Self-Tests 39  
Running the Echo Test 40  
Accessing the Help System 43  
Viewing Release Notes, Frequently Asked Questions,  
and KnowledgeBase Topics 44  
Accessing 3Com Support Services 44  
Removing NIC Software 46  
Windows 95 and Windows 98 46  
Windows NT 4.0 47  
Windows NT 3.51 47  
Frequently Asked Questions 48  
5 CONFIGURING THE NIC  
Displaying Configuration Settings 52  
Changing Configuration Settings 54  
A SPECIFICATIONS AND CABLING REQUIREMENTS  
Specifications 57  
Cabling Requirements 57  
Unshielded Twisted-Pair Cable 58  
10BASE-T Operation 58  
10BASE-T Specifications 59  
100BASE-TX Operation 59  
100BASE-TX Specifications 59  
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B TECHNICAL SUPPORT  
Online Technical Services 61  
World Wide Web Site 61  
3Com FTP Site 61  
3Com Bulletin Board Service 62  
Access by Analog Modem 62  
Access by Digital Modem 62  
3ComFacts Automated Fax Service 63  
Support from Your Network Supplier 63  
Support from 3Com 63  
Returning Products for Repair 65  
GLOSSARY  
INDEX  
3COM CORPORATION LIMITED WARRANTY  
FCC CLASS B STATEMENT  
FCC DECLARATION OF CONFORMITY  
3COM END USER SOFTWARE LICENSE AGREEMENT  
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FIGURES  
1
2
3
4
5
6
7
8
9
Sample Network 12  
OfficeConnect NIC 15  
Inserting the NIC 19  
Connecting the Network Cable to the NIC 20  
New Hardware Found Dialog Box 24  
Update Device Driver Wizard 26  
Add New Hardware Wizard 28  
Network Settings Window 31  
Device Manager Screen 33  
10 General Screen 38  
11 Diagnostics Screen 39  
12 Echo Test Responder Screen 41  
13 Echo Test Sender Screen 42  
14 Echo Test Statistics Screen 42  
15 Support Screen 45  
16 General Screen 53  
17 NIC Details Screen 53  
18 Properties Screen 55  
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TABLES  
1
2
3
4
5
6
7
Notice Icons  
9
Text Conventions  
10  
Cable Guidelines 17  
LED Descriptions 36  
Frequently Asked Questions  
48  
OfficeConnect NIC Configuration Settings  
51  
Unshielded Twisted-pair Cable Categories 58  
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ABOUT THIS GUIDE  
This guide describes how to install, configure, and  
troubleshoot the 3Com® OfficeConnect® Fast Ethernet  
Network Interface Card (NIC).  
This guide is appropriate for anyone who is familiar with  
the basic elements of a PC and is interested in connecting a  
PC to a network.  
If release notes are shipped with your product and the  
information there differs from the information in this  
guide, follow the instructions in the release notes.  
Most user guides and release notes are available in  
Adobe Acrobat Reader Portable Document Format (PDF)  
or HTML on the 3Com World Wide Web site:  
Conventions  
Table 1 and Table 2 list conventions that are used  
throughout this guide.  
Table 1 Notice Icons  
Icon  
Notice Type  
Description  
Information note  
Important features or instructions  
Caution  
Warning  
Information to alert you to potential damage to a  
program, system, or device  
Information to alert you to potential personal injury  
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10  
ABOUT THIS GUIDE  
Table 2 Text Conventions  
Convention  
Description  
Screen displays This typeface represents information as it appears on  
the screen.  
The words “enter”  
and “type”  
When you see the word “enter” in this guide, you must  
type something, and then press the Return or Enter key.  
Do not press the Return or Enter key when an instruction  
simply says “type.”  
Keyboard key names  
If you must press two or more keys simultaneously, the  
key names are linked with a plus sign (+). Example:  
Press Ctrl+Alt+Del  
Menu commands  
and buttons  
Menu commands or button names appear in italics.  
Example:  
From the Help menu, select Contents.  
Italics are used to:  
Words in italics  
Emphasize a point.  
Denote a new term at the place where it is defined in  
the text.  
Identify menu names, menu commands, and software  
button names. Examples:  
From the Help menu, select Contents.  
Click OK.  
Year 2000 Compliance  
For information on Year 2000 compliance and 3Com  
products, visit the 3Com Year 2000 Web page:  
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GETTING STARTED  
1
The 3Com® OfficeConnect® Fast Ethernet Network  
Interface Card (NIC) allows you to connect your personal  
computer (PC) to an Ethernet (10BASE-T) or Fast Ethernet  
(100BASE-TX) network.  
The OfficeConnect NIC is specifically designed for the  
small office/home office environment.  
What This Guide Covers  
This guide provides all the information you need to install  
the OfficeConnect NIC and connect it to a network. It tells  
you how to:  
Insert the NIC into a PC.  
Attach the PC to a network port on a hub or switch.  
Install the NIC network driver and diagnostics software  
on the PC.  
Configure the NIC on the PC.  
Troubleshoot problems you may encounter with  
the NIC.  
What This Chapter Covers  
This chapter provides a brief introduction to networking  
and describes the features of your OfficeConnect NIC.  
If you’re already familiar with basic networking concepts,  
you can start with Chapter 2, “Installing the  
Network Interface Card.”  
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12  
CHAPTER 1: GETTING STARTED  
Understanding Networking  
A computer network is a group of computers and other  
associated devices, such as printers, fax machines, and  
modems, that are connected to one another so they can  
share resources and information.  
A network allows you to:  
Share resources — You and others on the network can  
share resources, such as a data file or directory, hard  
disk drive, printer, scanner, or modem.  
Exchange information — You can communicate and  
exchange information, such as e-mail, with all  
designated users on the network.  
Provide server support — You can store files and  
applications in a central location on one PC hard drive,  
where they can be accessed by any network users who  
have the proper authorization.  
Figure 1 shows a sample network composed of two PCs, a  
printer, and a hub.  
Figure 1 Sample Network  
Computer  
1
Computer  
2
Printer  
1
0
1
A
3
M
0
V
A
D
C
X
+
Hub  
M
D
I/  
X
8
1
X
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Understanding Networking  
13  
Every network requires special software, called a network  
operating system (NOS) (such as Windows NT or NetWare),  
to control the flow of information between users.  
Each PC that you want to connect as part of the network  
must have an operating system (such as Windows 95,  
Windows 98, or Windows NT) that can communicate with  
the NOS.  
In a peer-to-peer networking architecture, the operating  
system that is installed on each PC acts as the NOS. In a  
client/server networking architecture, the operating system  
that is installed on each client PC communicates with the  
NOS, which is installed on the server PC.  
There are two basic types of small business network  
architectures: peer-to-peer and client/server.  
Peer-to-Peer Networks  
A peer-to-peer network is generally suited for home and  
small office use. This type of network is the easiest to  
install, accommodates up to about five PCs, and is  
suitable for sharing applications, data, printers, and  
other localized resources.  
The PCs on a peer-to-peer network are connected directly to  
one other or to a central point, usually a device called a hub.  
Unlike a client/server network, a peer-to-peer network allows  
users to share information without relying on a centralized  
server. Figure 1 is an example of a peer-to-peer network.  
The PCs on a peer-to-peer network require an operating  
system such as Windows 95 or Windows 98. This operating  
system acts as the NOS.  
For more information on peer-to-peer networking, see the  
Network Assistant CD included in your package.  
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14  
CHAPTER 1: GETTING STARTED  
Client/Server Networks  
A client/server network is ideal for organizations that  
require fast network access for large applications such  
as multimedia, databases, and video.  
In a client/server network, all shared applications and files  
are stored on one central computer known as the server.  
Network users (client PCs) can store their own files on their  
own PCs, and then use the server to access shared files and  
peripherals, such as printers, fax machines, and modems.  
The client PCs on a client/server network require an  
operating system such as Windows 95, Windows 98, or  
Windows NT. The servers on a client/server network require  
a NOS such as Windows NT or NetWare.  
Ethernet and Fast Ethernet Networking Protocols  
Ethernet and Fast Ethernet are local area network (LAN)  
protocols, or specifications, that define the signaling of the  
network and specify how data is placed on and retrieved  
from the network.  
Fast Ethernet is the same as Ethernet, except for the speed:  
Ethernet has a data transfer rate of 10 Mbps (megabits  
per second).  
Fast Ethernet has a data transfer rate of 100 Mbps.  
The OfficeConnect NIC is compatible with both Ethernet  
and Fast Ethernet networks. It automatically connects to  
the network at 10 Mbps or 100 Mbps, depending on the  
speed of the connected network hub or switch.  
For more information on Ethernet and Fast Ethernet, see  
Appendix A.  
For more information on networking, see the  
Network Assistant CD included in your package.  
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Understanding Network Interface Cards  
15  
Understanding Network Interface Cards  
A network interface card (NIC) is a printed circuit board  
that plugs into a PC expansion slot in your computer to  
provide a connection to a network.  
Once the NIC is installed in your PC, you connect it to the  
network media (cabling, such as unshielded twisted-pair  
[UTP]), which in turn connects to all the devices on  
the network.  
About the OfficeConnect NIC  
The OfficeConnect NIC is a 10/100 Mbps PCI (Peripheral  
Component Interconnect) NIC. It connects your PC to a  
10 Mbps Ethernet or 100 Mbps Fast Ethernet network.  
Figure 2 OfficeConnect NIC  
TX  
RJ-45 port  
D
ATA  
AC  
T
LEDs  
10  
L
N
K
100  
The OfficeConnect NIC backplate has three light-emitting  
diodes (LEDs):  
10 LNK (link)  
100 LNK (link)  
ACT (activity)  
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16  
CHAPTER 1: GETTING STARTED  
After the NIC is installed, these LEDs show whether theres  
an active connection between the NIC and the network,  
and the speed at which you’re connected. (See  
“Interpreting the LEDs” in Chapter 4 for more  
information.)  
Required Hardware  
You can install the OfficeConnect NIC in any IBM-compatible  
PC with an available PCI expansion slot. Almost all  
PCs currently on the market have such slots. (See “Inserting  
the NIC” in Chapter 2 for more information about  
PCI expansion slots.)  
Required Cabling  
You need an unshielded twisted-pair cable with RJ-45  
connectors on both ends to connect the OfficeConnect NIC  
to the network. This cable is not supplied with the NIC.  
If you’re connecting to a 10 Mbps Ethernet network,  
use a Category 3, 4, or 5 UTP cable.  
If you’re connecting to a 100 Mbps Fast Ethernet  
network, use a Category 5 UTP cable.  
The maximum Ethernet cable length allowed between  
the NIC and the network device to which it is connected  
is 328 feet (100 meters).  
For more information on cabling, see “Cabling  
Requirements” in Appendix A.  
Required Software  
The OfficeConnect NIC is compatible with the following  
operating systems:  
Windows 95  
Windows 98  
Windows NT versions 4.0 and 3.51  
You can use the OfficeConnect NIC to connect to both  
Microsoft and NetWare network environments.  
The EtherDisk diskette included in your package contains the  
software (configuration programs, diagnostic programs, and  
device drivers) that allows your NIC to work with all of the  
operating systems mentioned in this section.  
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INSTALLING THE  
NETWORK INTERFACE CARD  
2
This chapter explains how to install the OfficeConnect NIC  
in your PC and connect it to an Ethernet or Fast Ethernet  
network.  
Preparing for Installation  
Before you install the OfficeConnect NIC, make sure  
that you have the following items:  
OfficeConnect 10/100 Fast Ethernet NIC  
OfficeConnect EtherDisk diskette  
If any of these items are damaged or missing, contact  
your shipper or network supplier.  
You also need an unshielded twisted-pair (UTP) cable  
with RJ-45 connectors on both ends to connect the  
OfficeConnect NIC to an Ethernet or Fast Ethernet  
network. This cable is not supplied with the NIC.  
Table 3 specifies the type of cable that you need for the  
type of network that you are connecting to (10 Mbps  
Ethernet or 100 Mbps Fast Ethernet).  
The maximum distance between any two devices on your  
network can be no more than 328 feet (100 meters).  
Table 3 Cable Guidelines  
Type of  
Network  
Maximum  
Cable Length  
Cable Required  
Ethernet  
(10BASE-T)  
Category 3, 4, or 5 UTP  
with RJ-45 connectors on  
both ends  
328 ft/100 m  
Fast Ethernet Category 5 UTP with RJ-45  
(100BASE-TX) connectors on both ends  
328 ft/100 m  
The next step is to insert the NIC in the PC.  
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18  
CHAPTER 2: INSTALLING THE NETWORK INTERFACE CARD  
Inserting the NIC  
To insert the OfficeConnect NIC in your PC:  
1 Remove all jewelry from your hands and wrists.  
CAUTION: The NIC is packed in an antistatic container  
to protect it during shipment. To avoid damaging any  
static-sensitive components on the NIC, before you remove  
it from the container, touch the metal chassis of your PC to  
discharge static electricity from your body. Also, be careful  
to handle the NIC by its edges only.  
2 Turn the power off to the PC. Unplug the  
power cable. Detach all other cables from the PC.  
3 Remove the PC cover.  
See your PC documentation for details.  
4 Find an empty PCI expansion slot and remove the  
corresponding slot cover. Keep the backplate screw.  
The OfficeConnect NIC works in a PCI expansion slot. Some  
PCs have three types of expansion slots: PCI, ISA, and EISA.  
PCI slots are usually white and shorter than the other  
expansion slots (see Figure 3). ISA slots are usually black.  
EISA slots are usually brown, and are as long as ISA slots. If  
you’re not sure what type of expansion slots your PC has,  
see your PC documentation for details.  
For more information on PCI expansion slots, see  
“Frequently Asked Questions” in Chapter 4.  
5 Carefully insert the NIC into the slot, pressing firmly  
with steady pressure until it’s seated properly.  
The NICs metal backplate should be positioned so that you  
can easily fasten it with the backplate screw. You shouldn’t  
be able to see any of the NICs edge connector.  
Not all PCs have expansion slots positioned on the bottom  
of the chassis, as shown in Figure 3. You may be using a PC  
with the expansion slots on a vertical panel. If so, follow  
the same insertion instructions, except install the NIC  
horizontally. If it helps, position the PC on its side  
temporarily to insert the NIC securely.  
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Inserting the NIC  
19  
Figure 3 Inserting the NIC  
1 Remove slot cover  
2 Insert NIC  
PCI slots  
6 Fasten the NIC with the backplate screw you removed  
in step 4.  
7 Replace the PC cover.  
8 Reconnect any cables that you disconnected before  
you opened the PC.  
Do not turn on the power to the PC.  
The next step is to connect the NIC to your network.  
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20  
CHAPTER 2: INSTALLING THE NETWORK INTERFACE CARD  
Connecting the NIC to Your Network  
This section describes how to connect the OfficeConnect  
NIC to a network device. For more information on  
networking or creating a peer-to-peer network, see  
the Network Assistant CD included in your package.  
To connect the OfficeConnect NIC to a network device:  
1 Using an unshielded twisted-pair (UTP) cable, insert  
one of the RJ-45 connectors on the cable into the  
RJ-45 port on the installed NIC, as shown in Figure 4.  
If you’re connecting to a 10 Mbps Ethernet network,  
use a Category 3, 4, or 5 UTP cable.  
If you’re connecting to a 100 Mbps Fast Ethernet  
network, use a Category 5 UTP cable.  
See Table 3 at the beginning of this chapter or Appendix A  
for more information on network cabling requirements.  
Figure 4 Connecting the Network Cable to the NIC  
RJ-45 port  
ta  
a
D
X
T
T
C
A
L
N
K
0
1
0
0
1
1
0
1
A
3
M
0
V
A
D
C
X
+
M
D
I/  
X
8
1
X
or  
Printer  
Hub  
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Connecting the NIC to Your Network  
21  
2 Insert the other end of the UTP cable into an active  
network port.  
An active network port may be on a network hub or  
switch, or a peripheral device (such as a printer) that is  
network-ready (that is, it already has a NIC inside it).  
Do not turn on the power to the PC.  
The next step is to install the network driver. Go to  
Chapter 3.  
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INSTALLING THE  
NETWORK DRIVER  
3
This chapter describes how to install the network driver  
in your PC. You must install the network driver so that  
the OfficeConnect NIC can transmit and receive data over  
the network.  
Instructions are provided for the following operating  
systems supported by the OfficeConnect NIC:  
Windows 95  
Windows 98  
Windows NT  
Go to the appropriate section in this chapter for your  
operating system.  
If a NIC has already been installed in your PC, you must  
remove its network driver before you install the driver for  
the OfficeConnect NIC. To nd out whether a NIC has  
already been installed in your PC, and to remove its driver,  
follow the steps in “Removing NIC Software” in Chapter 4.  
Windows 95  
To install the network driver under Windows 95, you need  
the Windows 95 installation files. These files may be on a  
CD or diskettes, or they may have been copied to your hard  
drive when Windows 95 was installed on your system.  
The version of Windows 95 installed on your PC  
determines which of the driver installation procedures  
to use.  
To determine the Windows 95 version installed on your PC:  
1 Right-click the My Computer icon, and then  
click Properties.  
The System Properties window appears.  
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24  
CHAPTER 3: INSTALLING THE NETWORK DRIVER  
2 Check the version number on the General screen,  
under System:  
If 4.00.950 or 4.00.950A is displayed, follow the  
procedure for Windows 95 Version A.  
If 4.00.950B is displayed, follow the procedure for  
Windows 95 Version B.  
Windows 95 Version A  
To install the network driver in a PC running version A of  
Windows 95:  
1 Make sure that the NIC is installed in your PC and that  
it’s connected to the network, as described in Chapter 2.  
2 Turn on the power to the PC.  
Windows 95 detects the NIC and displays the  
New Hardware Found dialog box (Figure 5), prompting  
you for the driver you want to install for your new  
hardware.  
Figure 5 New Hardware Found Dialog Box  
3 Select Driver from disk provided by hardware  
manufacturer, and then click OK.  
The Install from Disk dialog box appears.  
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Windows 95  
25  
4 Insert the EtherDisk diskette in drive A and make sure  
that A:\ appears in the Copy files from entry box.  
5 Click OK.  
If this is the first time that networking is being installed  
on your PC, the Identification tab of the Network  
window is displayed. Go to step 6.  
If networking has already been installed, you’re  
prompted for the Windows 95 CD. In this case, go  
to step 7.  
6 In the specified fields of the Identification tab  
screen, enter the following information, and then  
click OK:  
Computer Name — Identifies the computer on the  
network for other users. This entry must be a unique  
name of 15 characters or fewer, containing no spaces.  
Workgroup — Identifies the group (for example, your  
department name) to which your computer belongs.  
If you’re setting up a simple peer-to-peer network,  
this entry must be exactly the same for all the PCs in  
your network.  
Computer Description — Displays additional details to  
other users on the network about this PC. For example,  
you could specify that the PC has a printer attached.  
Filling in this field is optional.  
7 Insert the Windows 95 CD in the CD-ROM drive, and  
then click OK.  
If you don’t have the Windows 95 CD, click OK. Enter  
the path for the Windows 95 installation files on your PC  
(such as C:\WIN95) in the Copying Files entry box, and then  
click OK.  
Files are copied. You’re prompted to restart your PC.  
8 Remove the EtherDisk diskette from drive A, and  
then click Yes.  
You must reboot your PC to complete the installation.  
After Windows restarts, you’re prompted to enter your  
name and network password.  
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26  
CHAPTER 3: INSTALLING THE NETWORK DRIVER  
9 Enter your user name and password, and then  
click OK.  
The driver installation is complete. To confirm successful  
installation, go to “Verifying Successful Installation” later in  
this chapter.  
Windows 95 Version B  
To install the network driver in a PC running version B of  
Windows 95:  
1 Make sure that the NIC is installed in your PC and that  
it’s connected to the network, as described in Chapter 2.  
2 Turn on the power to the PC.  
Windows 95 detects the NIC. The Update Device Driver  
Wizard (Figure 6) starts and prompts you for a diskette  
or CD.  
Figure 6 Update Device Driver Wizard  
3 Insert the EtherDisk diskette in drive A, and then  
click Next.  
Windows finds the driver and asks if you want to use  
this driver.  
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Windows 95  
27  
4 Click Finish.  
The Insert Disk dialog box prompts you for the  
OfficeConnect EtherDisk diskette.  
5 Click OK.  
The Copying Files dialog box appears.  
6 Make sure that A:\ appears in the Copying files from  
entry box, and then click OK.  
If this is the first time that networking is being installed  
on your PC, the Identification tab of the Network  
window is displayed. Go to step 7.  
If networking has already been installed, you’re prompted  
for the Windows 95 CD. In this case, go to step 8.  
7 In the specified fields of the Identification tab  
screen, enter the following information, and then  
click OK:  
Computer Name — Identifies the computer on the  
network for other users. This entry must be a unique  
name of 15 characters or fewer, containing no spaces.  
Workgroup — Identifies the group (for example, your  
department name) to which your computer belongs.  
If you’re setting up a simple peer-to-peer network,  
this entry must be exactly the same for all the PCs in  
your network.  
Computer Description — Displays additional details to  
other users on the network about this PC. For example,  
you could specify that the PC has a printer attached.  
Filling in this field is optional.  
8 Insert the Windows 95 CD in the CD-ROM drive, and  
then click OK.  
If you don’t have the Windows 95 CD, click OK. Enter  
the path for the Windows 95 installation files on your PC  
(such as C:\WIN95) in the Copying Files entry box, and then  
click OK.  
Files are copied. You’re prompted to restart your PC.  
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28  
CHAPTER 3: INSTALLING THE NETWORK DRIVER  
9 Remove the EtherDisk diskette from drive A, and  
then click Yes.  
You must reboot your PC to complete the installation.  
After Windows restarts, you’re prompted for your user  
name and password.  
10 Enter your user name and password, and then  
click OK.  
The driver installation is complete. To confirm successful  
installation, go to “Verifying Successful Installation” later in  
this chapter.  
Windows 98  
To install the network driver in a PC running Windows 98:  
1 Make sure that the NIC is installed in your PC and that  
it’s connected to the network, as described in Chapter 2.  
2 Turn on the power to the PC.  
Windows 98 detects the NIC. The Add New Hardware  
Wizard (Figure 7) starts.  
Figure 7 Add New Hardware Wizard  
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Windows 98  
29  
3 Insert the EtherDisk diskette in drive A, and then  
click Next.  
4 Select Search for the best driver for your device  
(Recommended), and then click Next.  
5 Select Floppy disk drives, and then click Next.  
Windows finds the driver file for the device.  
6 Click Next.  
Files are copied.  
If the Insert Disk window appears, prompting you to insert  
the EtherDisk diskette, click OK.  
You’re then prompted for the Windows 98 CD.  
7 Insert the Windows 98 CD in the CD-ROM drive, and  
then click OK.  
If you don’t have the Windows 98 CD, click OK. Enter the  
path for the Windows 98 installation files on your PC in the  
Copying Files entry box.  
Files are copied. The installation is complete when you’re  
prompted to click Finish.  
8 Click Finish.  
You’re prompted to restart the PC.  
9 Click Yes to restart the PC.  
You must reboot your PC to complete the installation.  
The driver installation is complete. To confirm successful  
installation, go to “Verifying Successful Installation” later in  
this chapter.  
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30  
CHAPTER 3: INSTALLING THE NETWORK DRIVER  
Windows NT  
This section describes how to install the network driver in  
a PC running Microsoft Windows NT 4.0 or 3.51.  
Windows NT 4.0  
To install the network driver in a PC running  
Windows NT 4.0:  
1 Make sure that the NIC is installed in your PC and that  
it’s connected to the network, as described in Chapter 2.  
2 Turn on the power to the PC.  
3 Double-click the My Computer icon, then the  
Control Panel icon, and then the Network icon.  
The Network window appears.  
4 Click the Adapters tab.  
If networking hasn’t been installed on your system before,  
Windows NT asks you if you want to install networking. Click  
Yes. See the WINNT.TXT file located on the EtherDisk diskette  
or your Windows NT documentation for instructions.  
5 Click Add.  
The Select Network Adapter dialog box appears.  
6 Click Have Disk.  
The Insert Disk dialog box appears.  
7 Insert the EtherDisk diskette in drive A, enter the path  
to drive A if it’s not already displayed, and click OK.  
The OEM Option dialog box appears.  
8 If not already selected, select 3Com OfficeConnect  
10/100 Fast Ethernet NIC, and click OK.  
Files are copied. The 3Com NIC Diagnostics window appears.  
9 Click Close to continue the installation.  
The Network screen appears with the OfficeConnect NIC  
displayed in the list of network adapters.  
10 Click Close.  
The driver installation is complete. To confirm successful  
installation, go to “Verifying Successful Installation” later in  
this chapter.  
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Windows NT  
31  
Windows NT 3.51  
To install the network driver in a PC running  
Windows NT 3.51:  
1 Make sure that the NIC is installed in your PC and that  
it’s connected to the network, as described in Chapter 2.  
2 Turn on the power to the PC.  
3 In the Main window of the Program Manager,  
double-click the Control Panel icon and then the  
Network icon.  
The Network Settings window (Figure 8) appears.  
Figure 8 Network Settings Window  
4 Click Add Adapter.  
The Add Network Adapter window appears.  
5 Click the down arrow to expand the  
Network Adapter Card list box, and then scroll down  
and select <Other> Requires disk from manufacturer.  
6 Click Continue.  
The Insert Disk dialog box appears.  
7 Insert the EtherDisk diskette in drive A, make sure  
that A:\ appears in the entry box, and then click OK.  
The Select OEM Option window appears.  
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32  
CHAPTER 3: INSTALLING THE NETWORK DRIVER  
8 Make sure that 3Com OfficeConnect 10/100  
Fast Ethernet NIC is selected, and then click OK.  
Files are copied. The 3Com NIC Diagnostics screen appears.  
9 Click Close to continue the installation.  
The Network Settings window reappears.  
10 Click OK in the Network Settings window.  
If the TCP/IP Configuration screen appears, enter the  
requested information, and then click OK. For help with  
this information, click the Help button on the TCP/IP  
Configuration screen.  
You’re prompted to restart Windows NT.  
11 Remove the EtherDisk diskette from drive A.  
12 Click Restart Now.  
You must reboot your PC to complete the installation.  
The driver installation is complete. To confirm successful  
installation, go to the next section, “Verifying Successful  
Installation.”  
Verifying Successful Installation  
To confirm that the NIC is installed correctly in your PC,  
follow the steps appropriate for your operating system.  
Windows 95 and Windows 98  
To confirm that the NIC is installed correctly in a PC running  
Windows 95 or Windows 98:  
1 Right-click the My Computer icon, click Properties,  
and then select the Device Manager tab.  
A list of devices appears, arranged by type (Figure 9).  
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Verifying Successful Installation  
33  
Figure 9 Device Manager Screen  
2 Double-click Network adapters.  
The name of the installed OfficeConnect NIC appears, as  
shown in Figure 9.  
If a yellow exclamation point (!) or a red X appears next  
to the NIC name, the installation wasn’t successful.  
Go to “Frequently Asked Questions” in Chapter 4 to  
troubleshoot the NIC.  
3 Double-click the name of the NIC to display a  
description of the NIC and its current status.  
The message in the Device status panel confirms that  
the OfficeConnect NIC is working properly.  
4 Click Cancel to close each dialog box. Then close the  
Control Panel and My Computer windows.  
You’ve successfully installed and configured the  
OfficeConnect NIC.  
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34  
CHAPTER 3: INSTALLING THE NETWORK DRIVER  
Windows NT 4.0  
To confirm that the NIC is installed correctly in a PC running  
Windows NT 4.0:  
1 Double-click the Network icon in the Control Panel.  
2 Click the Adapters tab.  
The OfficeConnect NIC should appear in the list of network  
adapters. If it doesn’t appear, see Chapter 4 for  
troubleshooting information.  
Windows NT 3.51  
To confirm that the NIC is installed correctly in a PC running  
Windows NT 3.51:  
1 Double-click the File Manager icon.  
2 From the Disk menu, select Connect Network Drive.  
The presence of network server names confirms  
successful installation.  
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TROUBLESHOOTING  
INSTALLATION PROBLEMS  
4
This chapter explains how to isolate and solve problems  
that may occur when you install the OfficeConnect NIC.  
Basic Troubleshooting Tips  
If you have trouble installing your OfficeConnect NIC, or if  
the installation failed (as described in “Verifying Successful  
Installation” in Chapter 3), follow these basic  
troubleshooting tips.  
CAUTION: Before inserting or removing the NIC from  
your PC, turn the power off to the PC and unplug the  
power cord.  
Check the NIC installation by reviewing Chapter 2.  
Make sure that the NIC is seated correctly in an  
appropriate expansion slot. Check for specific hardware  
problems, such as loose or broken connections.  
Inspect all cables and connections. Check the length  
and rating of the cable. Make sure that the cable and  
its length comply with 10BASE-T or 100BASE-TX  
recommendations. See Table 3 in Chapter 2 or  
Appendix A for more information.  
Make sure that you’re running the latest BIOS for your  
PC. If your BIOS hasn’t been upgraded in the previous  
12 months, contact your PC manufacturer to obtain  
the current version of your BIOS software.  
Run the NIC self-tests and the Echo test, as described  
later in this chapter.  
Download the latest OfficeConnect NIC driver from the  
3Com World Wide Web site and install it in your PC.  
Run the NIC self-tests and the Echo test again, using  
the same option settings as those used on the failed  
NIC. If the tests still fail, the NIC may be defective.  
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36  
CHAPTER 4: TROUBLESHOOTING INSTALLATION PROBLEMS  
Interpreting the LEDs  
The OfficeConnect NIC has three light-emitting diodes  
(LEDs) that can help indicate when there are problems  
with your network connection.  
See Figure 2 in Chapter 1 for a picture of the LEDs.  
Table 4 explains the LED states.  
Table 4 LED Descriptions  
LED  
State  
Meaning  
If the network driver is installed, as described in Chapter 3,  
the connection to the 10BASE-T Ethernet network is active.  
10 LNK  
(link)  
On  
If the driver is not installed, the NIC is receiving power.  
Something is preventing the connection between the NIC  
and the network. See the troubleshooting steps following  
this table.  
Off  
The cable polarity is reversed. Try a different  
network cable.  
Blinking  
If the network driver is installed, as described in Chapter 3,  
the connection to the 100BASE-TX Fast Ethernet network  
is active.  
100 LNK On  
(link)  
If the driver is not installed, the NIC is receiving power.  
Something is preventing the connection between the NIC  
and the network. See the troubleshooting steps following  
this table.  
Off  
Network traffic is present.  
ACT  
Flashing  
(activity)  
Heavy network traffic is present.  
No network traffic is present.  
Steady  
Off  
If the LNK (10 LNK or 100 LNK) LED is off and the PC is  
powered on and the network cable is connected, check  
the following:  
1 Ensure that the network hub or device to which the  
NIC is connected and the cable connecting to your  
NIC comply with the 10BASE-T or 100BASE-TX  
specifications.  
2 Ensure that the network hub or device to which the  
NIC is connected is powered on.  
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Starting the 3Com NIC Diagnostics Program  
37  
Starting the 3Com NIC Diagnostics Program  
The 3Com NIC Diagnostics program allows you to run  
diagnostic tests, change NIC configuration settings, and  
access 3Com support services and Help topics.  
This section describes how to use the 3Com NIC  
Diagnostics program to help troubleshoot problems  
you may encounter with the NIC.  
For instructions on changing NIC configuration settings,  
see Chapter 5.  
The 3Com NIC Diagnostics program is installed  
automatically when you install the network driver.  
To start the 3Com NIC Diagnostics program:  
1 Double-click the 3Com icon in the Windows  
system tray.  
If the 3Com icon isn’t visible in the system tray, follow  
these steps:  
a From the Windows Start menu, select Programs.  
b Select 3Com NIC Utilities.  
c Click 3nicdiag.  
For PCs running Windows NT 3.51, from the File menu,  
select Run. At the command prompt, enter the path for the  
3Com NIC Diagnostics program. The default path is  
C:\WINNT35\SYSTEM32\3NICDIAG.EXE.  
A warning message appears, stating that your PC will be  
disconnected from the network.  
This means that no applications other than the 3Com NIC  
Diagnostics program can connect to the network while you  
run the diagnostics program.  
All applications are automatically reconnected to the  
network when you exit the diagnostics program. If your  
PC doesn’t automatically reconnect to the network, reboot  
the PC.  
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38  
CHAPTER 4: TROUBLESHOOTING INSTALLATION PROBLEMS  
2 Click OK.  
The 3Com NIC Diagnostics General screen (Figure 10)  
appears.  
Figure 10 General Screen  
Click the Help button to receive information about the  
diagnostic screen that’s currently active.  
The General screen displays general information about  
the NIC. It also allows you to show or not show the  
3Com icon in the Windows system tray by clicking the  
Enable Tray Control check box. The 3Com icon provides  
quick access to the 3Com NIC Diagnostics program.  
3 Click Cancel to exit the 3Com NIC Diagnostics program.  
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Running the NIC Self-Tests  
39  
Running the NIC Self-Tests  
The first tests to run when you have a problem with the  
OfficeConnect NIC are the NIC self-tests.  
The NIC self-tests can verify that the OfficeConnect NIC is  
working correctly by checking the physical components,  
connectors, and circuitry on the NIC.  
To run the NIC self-tests:  
1 Double-click the 3Com icon in the Windows  
system tray.  
If the 3Com icon isn’t visible in the system tray, follow the  
instructions in the previous section, “Starting the 3Com  
NIC Diagnostics Program.”  
2 Click OK.  
The 3Com NIC Diagnostics General screen appears  
(Figure 10).  
3 Click the Diagnostics tab.  
The Diagnostics screen (Figure 11) appears.  
Figure 11 Diagnostics Screen  
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40  
CHAPTER 4: TROUBLESHOOTING INSTALLATION PROBLEMS  
For a description of each test, click the Help button on  
the screen or click the question mark (?) at the top of the  
screen, move it over the test, and click once. A pop-up box  
displays information about the test.  
4 Click Start in the Self-Test panel.  
A six-test sequence begins. The status of each test (such as  
Passed or In Progress) is displayed in the Status column next  
to each test as the tests run and are completed.  
You can click Stop to stop the tests at any point.  
If all of the tests are successful, the OfficeConnect NIC  
is working correctly.  
If any test failed, click the question mark (?) at the  
top right corner of the screen, move it over the failed  
test topic, and click once. A pop-up box displays  
information about the test and what to do if it fails.  
Running the Echo Test  
After you’ve confirmed that the OfficeConnect NIC is  
functioning correctly by running the NIC self-tests (as  
described in the previous section), verify that the NIC is  
transmitting and receiving data over the network by  
running the Echo test.  
The Echo test checks the ability of the NIC to transmit and  
receive data while its connected to the network.  
To run the Echo test, you need two PCs networked  
together.  
The first PC is used to send data. This is called the  
sending PC.  
The second PC receives data sent from the first PC. This  
is called the responding PC.  
The two PCs must each have a 3Com OfficeConnect NIC  
installed. Also make sure that the network driver is installed.  
CAUTION: Running the Echo test while connected to  
an active network with more than two computers can  
cause intermittent failures within the test. Make sure that  
only two computers are connected to the network before  
running the Echo test.  
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Running the Echo Test  
41  
To run the Echo test:  
1 On both PCs:  
a From the Windows Start menu, select Programs.  
b Select 3Com NIC Utilities.  
c Click 3nicdiag.  
d Click OK.  
e Click the Diagnostics tab to display the Diagnostics  
screen, shown in Figure 11.  
2 On the second PC (the responding PC):  
a Click Respond in the Echo Test panel.  
The Echo Test Responder screen (Figure 12) appears.  
Figure 12 Echo Test Responder Screen  
b Click Start.  
3 On the first PC (the sending PC):  
a Click Send on the Diagnostics screen.  
The Echo Test Sender screen (Figure 13) appears.  
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42  
CHAPTER 4: TROUBLESHOOTING INSTALLATION PROBLEMS  
Figure 13 Echo Test Sender Screen  
b Click Start.  
The two PCs attempt to transmit data to each other.  
Statistics appear in the window, as shown in Figure 14.  
Figure 14 Echo Test Statistics Screen  
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Accessing the Help System  
43  
If the values of the Bytes Received, Bytes Transmitted,  
Packets Received, or Packets Transmitted statistics  
increase, the two PCs are successfully transmitting data  
over the network.  
If the values of the statistics remain at zero, or if there are  
excessive collisions, the two PCs aren’t transmitting data  
successfully over the network. Check the following:  
Ensure that the network hub or device to which the  
NIC is connected and the cable connecting to your  
NIC comply with the 10BASE-T or 100BASE-TX  
specifications. (See Appendix A.)  
Ensure that the network hub or device to which the  
NIC is connected is powered on.  
For a description of each statistic, click the Help button on  
the screen or click the question mark (?) at the top of the  
screen, move it over the topic, and click once. A pop-up  
box displays information about the statistic.  
c Close all open windows when the Echo test is finished.  
Accessing the Help System  
The OfficeConnect NIC Help system is a Windows Help  
application that includes numerous Help topics about the  
OfficeConnect NIC.  
To access the OfficeConnect NIC Help system:  
1 From the Windows Start menu, select Programs.  
2 Select 3Com NIC Utilities.  
3 Click 3nichelp.  
For PCs running Windows NT 3.51, from the File  
menu, select Run. At the command prompt, enter the  
path for the 3Com NIC Help system. The default path is  
C:\WINNT35\SYSTEM32\3NICDIAG.HLP.  
The main Help screen appears, displaying information  
about the 3Com NIC Diagnostics General screen.  
4 Click Help Topics to display a list of Help topics or click  
Find to search for a Help topic.  
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44  
CHAPTER 4: TROUBLESHOOTING INSTALLATION PROBLEMS  
Viewing Release Notes, Frequently Asked Questions,  
and KnowledgeBase Topics  
The 3Com NIC Diagnostics program contains a substantial  
database of support-related and service-related data that  
you can access in the following categories: release notes,  
frequently asked questions, and KnowledgeBase topics.  
To access the support database:  
1 Double-click the 3Com icon in the Windows  
system tray.  
If the 3Com icon isn’t visible in the system tray, follow the  
instructions in the section “Starting the 3Com NIC  
Diagnostics Program” earlier in this chapter.  
2 Click OK.  
3 Click the Support tab.  
The Support screen appears.  
4 Click Release Notes.  
The Release Notes Help screen appears.  
Click the Release Notes link to display tips about  
installing and using the OfficeConnect NIC.  
Click the Frequently Asked Questions link to display  
common questions asked by customers and answered  
by 3Com support experts.  
Click the KnowledgeBase link to display OfficeConnect  
NIC compatibility topics.  
Accessing 3Com Support Services  
The Support screen provides access to the 3Com  
World Wide Web site, customer support databases (such  
as release notes and frequently asked questions), and the  
problem report generator.  
To access 3Com support services:  
1 Double-click the 3Com icon in the Windows  
system tray.  
If the 3Com icon isn’t visible in the system tray, follow the  
instructions in the section “Starting the 3Com NIC  
Diagnostics Program” earlier in this chapter.  
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Accessing 3Com Support Services  
45  
2 Click OK.  
3 Click the Support tab.  
The Support screen (Figure 15) appears.  
Figure 15 Support Screen  
Click Diagnostics to run the 3Com NIC diagnostic tests.  
See “Running the NIC Self-Tests” and “Running the  
Echo Test” earlier in this chapter for information on  
how to run the 3Com NIC diagnostic tests.  
Click Release Notes to display customer support  
information databases about the OfficeConnect NIC  
in three categories: release notes, frequently asked  
questions, and the KnowledgeBase.  
Click BBS Information to display the 3Com BBS  
telephone numbers and modem speeds.  
The http://www.3com.com button displays the  
3Com World Wide Web site address.  
Click Problem Report if you want to generate a  
problem report file about an OfficeConnect NIC  
problem. You can then e-mail this file to 3Com.  
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46  
CHAPTER 4: TROUBLESHOOTING INSTALLATION PROBLEMS  
Removing NIC Software  
This section describes how to remove a NICs network  
driver and software from your PC so that you can reinstall  
the software or physically remove the NIC from your PC.  
If you want to reinstall the OfficeConnect NIC network  
driver and software, you must first remove the driver and  
software, as described in this section.  
Windows 95 and Windows 98  
To remove NIC software in a PC running Windows 95  
or Windows 98:  
1 Double-click the My Computer icon, then the  
Control Panel icon, and then the System icon.  
2 Click the Device Manager tab.  
3 Double-click Network adapters.  
4 Select the name of the NIC, for example,  
3Com OfficeConnect 10/100 Fast Ethernet  
(3CSOHO100-TX) NIC.  
5 Click Remove.  
6 Click OK to confirm the device removal.  
The NIC driver and diagnostic software are removed  
from the PC.  
You’re prompted to restart the PC.  
If you’re physically removing the NIC from the PC,  
click No. Don’t restart the PC until you shut down the  
system, turn the power off, and remove the NIC from  
the PC.  
If you’re reinstalling the NIC software, click Yes.  
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Removing NIC Software  
47  
Windows NT 4.0  
To remove NIC software in a PC running Windows NT 4.0:  
1 Double-click the My Computer icon, then the  
Control Panel icon, and then the Network icon.  
The Network screen appears.  
2 Click the Adapters tab.  
3 Select the name of the NIC in the Network Adapters  
box, and then click Remove.  
4 Click Yes to confirm the removal.  
5 Click Close to close the Network screen.  
The NIC driver and diagnostic software are removed from  
the PC.  
You’re prompted to restart the PC.  
If you’re physically removing the NIC from the PC,  
click No. Don’t restart the PC until you shut down the  
system, turn the power off, and remove the NIC from  
the PC.  
If you’re reinstalling the NIC software, click Yes to  
restart the PC.  
Windows NT 3.51  
To remove NIC software in a PC running Windows NT 3.51:  
1 In the Main Program window, double-click  
the Control Panel icon, and then the Network icon.  
The Network Settings window is displayed.  
2 In the Installed Adapter Cards panel, select the name  
of the installed NIC and click Remove.  
The Network Settings window displays a warning message.  
3 Click Yes.  
The Network Settings window is displayed again. The NIC  
no longer appears in the Installed Adapter Cards panel.  
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48  
CHAPTER 4: TROUBLESHOOTING INSTALLATION PROBLEMS  
4 Click OK.  
The NIC driver and diagnostic software are removed from  
the PC.  
The Network Settings Change dialog box appears,  
prompting you to restart.  
If you’re physically removing the NIC from the PC, click  
No. Don’t restart the PC until you shut down the system,  
turn the power off, and remove the NIC from the PC.  
If you’re reinstalling the NIC software, click Restart Now.  
Frequently Asked Questions  
Table 5 describes some common questions and answers  
about the OfficeConnect NIC.  
To view questions and answers online, follow the instructions  
in “Viewing Release Notes, Frequently Asked Questions,  
and KnowledgeBase Topics” earlier in this chapter.  
To view additional questions and answers, see the text files  
located in the HELP directory on the EtherDisk diskette.  
Table 5 Frequently Asked Questions  
Question  
Answer  
Why does the  
OfficeConnect NIC  
When Windows 95/98 is installed after the OfficeConnect  
NIC has already been installed, Windows 95/98 installs the  
install as a “Generic PCI NIC as a generic PCI Ethernet controller.  
Ethernet Controller”  
under Other Devices in  
To work around this problem, follow these steps:  
1 In the Device Manager, double-click Other Devices.  
2 Click PCI Ethernet Controller.  
3 Click Remove.  
the Windows 95/98  
Device Manager?  
4 Restart your PC.  
In Windows 95/98,  
what should I do if a  
yellow exclamation  
point (!) appears next  
to the NIC name?  
1 In the Device Manager, double-click Other Devices.  
2 Click PCI Ethernet Controller or the duplicate PCI NIC entry.  
3 Click Remove.  
4 Restart your PC.  
(continued)  
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Frequently Asked Questions  
49  
Table 5 Frequently Asked Questions (continued)  
Question  
Answer  
How do I remove  
the 3Com icon from  
my Windows  
1 Double-click the 3Com icon to start the 3Com NIC  
Diagnostics program.  
2 In the bottom-right corner of the main window, click the  
Enable Tray Control check box to remove the check mark.  
system tray?  
3 Exit the program and the icon will not appear anymore.  
Which PCI slot  
should I use for my  
OfficeConnect NIC?  
3Com PCI NICs, such as the OfficeConnect NIC, are  
designed to work in any bus-mastering PCI slot, preferably  
slot 1. Normally, slot 1 is marked on the PC motherboard  
and is located closest to the computer power supply.  
Avoid any PCI slot next to an ISA slot. This is often a  
shared slot and does not support bus mastering. The  
NICs perform best in those slots that support  
bus-mastering data transfers.  
Some PCs have three types of expansion slots: PCI, ISA,  
and EISA. PCI slots are usually white and shorter than the  
other expansion slots (see Figure 3 in Chapter 2). ISA slots  
are usually black. EISA slots are usually brown, and are as  
long as ISA slots. If you’re not sure what type of expansion  
slots your PC has, see your PC documentation for details.  
Also refer to your PC manual for information on which  
slots support bus-mastering data transfers.  
Do I have to configure PCI is a self-configuring bus architecture. Most of the  
the OfficeConnect NIC? time you only need to install the NIC in your PC; PCI does  
the rest. However, on some PCI computers, you may be  
required to configure the computer’s BIOS manually after  
installing your PCI NIC. Refer to your PC documentation  
for more information about your PC’s BIOS.  
What interrupts  
should I avoid?  
You should avoid using any interrupts used by ISA/EISA  
boards that do not properly support shared interrupts  
(level-triggered). If you don’t know or aren’t sure whether  
other devices or adapters in your PC support shared  
interrupts, then avoid using them.  
Avoid using the same interrupt as your local hard drive  
(normally IRQ 14 for IDE drives and IRQ 11 for most SCSI  
host adapters), because not all hard drives support shared  
interrupts at this time. Avoid using 9 because it cascades  
with 2.  
Does the OfficeConnect Yes, the OfficeConnect NIC supports full-duplex operation  
NIC support  
full-duplex?  
at 10 Mbps and 100 Mbps.  
Full-duplex is the ability of a device or line to transmit data  
simultaneously in both directions (the PC is sending and  
receiving data at the same time).  
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CONFIGURING THE NIC  
5
This chapter describes how to display and change  
configuration settings for the OfficeConnect NIC.  
Table 6 describes the configurable settings for the  
OfficeConnect NIC. The default setting for each option  
is in bold in the Available Settings column.  
.
Table 6 OfficeConnect NIC Configuration Settings  
Option  
Description  
Available Settings  
Network Driver  
Optimization  
Specifies how to optimize the network Normal  
driver for your network environment.  
Minimized CPU  
Utilization  
In a client/server environment, the  
network driver may use a larger  
percentage of the CPU in order to  
improve network throughput. In this  
case, select Minimize CPU Utilization.  
Maximized Network  
Performance  
In peer-to-peer networks, or on  
multitasking PCs, it is best to  
balance the CPU utilization and the  
network performance. In this case,  
select Normal.  
Duplex  
Specifies the duplex mode, which  
determines if the NIC transmits data  
across the network in both directions  
simultaneously (the PC sends and  
receives data at the same time)  
(full-duplex) or in one direction at a  
time (half-duplex). The OfficeConnect  
NIC supports full-duplex at 10 Mbps  
and 100 Mbps.  
Auto Select  
Full Duplex  
Half Duplex  
Auto Select allows the NIC to  
automatically connect at the duplex  
mode of the connected hub.  
Media Type  
Determines the type of media your  
network is using.  
10BASE-T (10Mb/s)  
100BASE-TX  
Auto Select allows the NIC to  
automatically select the type for  
you, based on the NIC’s connection  
to the hub.  
(100 Mb/s)  
Auto Select  
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52  
CHAPTER 5: CONFIGURING THE NIC  
Displaying Configuration Settings  
Use the 3Com NIC Diagnostics program to display and  
change configuration settings for the OfficeConnect NIC.  
The 3Com NIC Diagnostics program is automatically  
installed when you install the network driver.  
To display the current configuration settings for the  
OfficeConnect NIC:  
1 Make sure that the NIC is installed and is connected  
to the network and that the network driver is  
installed.  
2 Double-click the 3Com icon in the Windows  
system tray.  
If the 3Com icon isn’t visible in the Windows system tray,  
follow these steps:  
a From the Windows Start menu, select Programs.  
b Select 3Com NIC Utilities.  
c Click 3nicdiag.  
For PCs running Windows NT 3.51, from the File menu,  
select Run. At the command prompt, enter the path for  
the 3Com NIC Diagnostics program. The default path is  
C:\WINNT35\SYSTEM32\3NICDIAG.EXE.  
A warning message appears, stating that your PC will be  
disconnected from the network.  
This means that no applications other than the 3Com NIC  
Diagnostics program will be able to connect to the network  
while you run the diagnostics program.  
All applications are automatically reconnected to the  
network when you exit the diagnostics program. If  
your PC doesn’t automatically reconnect to the  
network, reboot the PC.  
3 Click OK.  
The 3Com NIC Diagnostics General screen  
(Figure 16) appears.  
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Displaying Configuration Settings  
53  
Figure 16 General Screen  
Click the Help button to receive information about the  
diagnostic screen that’s currently active.  
4 Click NIC Details.  
The NIC Details screen (Figure 17) appears.  
Figure 17 NIC Details Screen  
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54  
CHAPTER 5: CONFIGURING THE NIC  
Each configuration setting is displayed with its current value.  
For a description of each setting, click the question mark in  
the upper right corner of the screen, drag it to a setting,  
and click once. A pop-up box appears, displaying  
information for the selected setting.  
5 Click OK to exit this screen.  
Changing Configuration Settings  
To change OfficeConnect NIC configuration settings:  
1 Double-click the 3Com icon in the Windows  
system tray.  
If the 3Com icon isn’t visible in the Windows system tray,  
follow these steps:  
a From the Windows Start menu, select Programs.  
b Select 3Com NIC Utilities.  
c Click 3nicdiag.  
For PCs running Windows NT 3.51, from the File menu,  
select Run. At the command prompt, enter the path for  
the 3Com NIC Diagnostics program. The default path is  
C:\WINNT35\SYSTEM32\3NICDIAG.EXE.  
A warning message appears, stating that your PC will be  
disconnected from the network.  
This means that no applications other than the 3Com NIC  
Diagnostics program will be able to connect to the network  
while you run the diagnostics program.  
All applications are automatically reconnected to the  
network when you exit the diagnostics program. If  
your PC doesn’t automatically reconnect to the  
network, reboot the PC.  
2 Click OK.  
3 Click the Properties tab.  
The 3Com NIC Diagnostics Properties screen  
(Figure 18) appears.  
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Changing Configuration Settings  
55  
Figure 18 Properties Screen  
4 Change the NIC’s configuration:  
To automatically configure the NIC to nonconflicting  
values with your PC, click Optimal Settings.  
To manually configure the NIC:  
a Select an option in the Individual Settings panel.  
For a description of each option, see Table 6 at the  
beginning of this chapter.  
b Click the down arrow in the list box and select a new  
value for the option.  
c Repeat the process to change any other setting on the  
Properties screen.  
5 Click OK to save values or Cancel to exit without  
saving values.  
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SPECIFICATIONS AND  
CABLING REQUIREMENTS  
A
This appendix lists the specifications and cable  
requirements for the OfficeConnect NIC.  
Specifications  
Network Interface  
10 Mbps Ethernet  
10BASE-T  
Ethernet IEEE 802.3 industry  
standard for a 10 Mbps  
baseband CSMA/CD local area  
network  
100 Mbps Fast Ethernet Ethernet IEEE 802.3u industry  
100BASE-TX  
standard for a 100 Mbps  
baseband CSMA/CD local area  
network  
Physical Dimensions  
Height:  
8.57 cm (3.75 in.)  
12.07 cm (4.75 in.)  
Length:  
Environmental Operating Range  
Operating temperature: 0˚ to 70 ˚C (32˚ to 158 ˚F)  
Humidity:  
10 to 90% noncondensing  
+5 V 5% @ 650 mA max  
Power Requirements  
Operating voltage:  
Cabling Requirements  
The cable, quality, distance, and connectors must  
comply with the Electronic Industries Association/  
Telecommunications Industries Association (EIA/TIA)  
568 Commercial Building Wiring Standard and the  
Technical Services Bulletin TSB38 standards.  
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58  
APPENDIX A: SPECIFICATIONS AND CABLING REQUIREMENTS  
Unshielded Twisted-Pair Cable  
Twisted-pair cable consists of copper wires surrounded by  
an insulator. Two wires are twisted together (the twisting  
prevents interference problems) to form a pair, and the pair  
forms a circuit that can transmit data. A cable is a bundle of  
one or more twisted pairs surrounded by an insulator.  
Unshielded twisted pair (UTP) is the most commonly used  
type of twisted-pair cable. Shielded twisted pair (STP)  
provides protection against crosstalk. Twisted-pair cable is  
now commonly used in Ethernet, Fast Ethernet, and other  
network topologies.  
The EIA/TIA defines five categories of unshielded  
twisted-pair cable (see Table 7).  
Table 7 Unshielded Twisted-pair Cable Categories  
Category Use  
1
2
3
Traditional telephone cable.  
Data transmissions up to 4 MHz.  
Voice and data transmission up to 25 MHz. The cable  
typically has four pairs of wires. Category 3 is the  
most common type of installed cable found in older  
corporate wiring schemes.  
4
5
Voice and data transmission up to 33 MHz. The cable  
normally has four pairs of wire. This grade of UTP  
isn’t common.  
Voice and data transmission up to 125 MHz. The cable  
normally has four pairs of copper wire and three twists  
per foot. Category 5 UTP is the most popular cable  
used in new installations today.  
10BASE-T Operation  
10BASE-T is the Institute of Electrical and Electronics  
Engineers (IEEE) 802.3 standard for Ethernet signaling over  
unshielded twisted-pair wire at 10 Mbps.  
Ethernet, as the most widely used network protocol, uses  
10BASE-T as its primary cabling scheme. Ethernets  
characteristics include:  
A data rate of 10 Mbps  
A broadcast architecture  
A specific media-access control (MAC) scheme  
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Cabling Requirements  
59  
10BASE-T Specifications  
The 10BASE-T name indicates a signaling speed of  
10 Mbps and twisted-pair wiring. Base stands for  
baseband, which denotes a technique for transmitting  
signals as direct-current pulses rather than modulating  
them onto separate carrier frequencies.  
A wiring topology using 10BASE-T specifies a wiring hub,  
cable arranged in a star configuration, and unshielded  
twisted-pair cable. Each node has a separate cable run that  
must not exceed 100 meters (328 ft) from the node to  
the hub.  
100BASE-TX Operation  
100BASE-TX is the Institute of Electrical and Electronics  
Engineers (IEEE) 802.3u standard for Ethernet signaling  
over unshielded twisted-pair wire at 100 Mbps.  
Fast Ethernet uses 100BASE-TX as its primary cabling  
scheme. Fast Ethernets characteristics include:  
A data rate of 100 Mbps  
A broadcast architecture  
A specific media-access control (MAC) scheme  
100BASE-TX Specifications  
The 100BASE-TX name indicates a signaling speed of  
100 Mbps and twisted-pair wiring. Base stands for  
baseband, which denotes a technique for transmitting  
signals as direct-current pulses rather than modulating  
them onto separate carrier frequencies.  
A wiring topology using 100BASE-T specifies a wiring hub,  
cable arranged in a star configuration, and unshielded  
twisted-pair cable. Each node has a separate cable run that  
must not exceed 100 meters (328 ft) from the node to  
the hub.  
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TECHNICAL SUPPORT  
B
3Com provides easy access to technical support information  
through a variety of services. This appendix describes  
these services.  
Information contained in this appendix is correct at time of  
publication. For the very latest, 3Com recommends that you  
access the 3Com Corporation World Wide Web site.  
Online Technical Services  
3Com offers worldwide product support 24 hours a day,  
7 days a week, through the following online systems:  
World Wide Web site  
3Com FTP site  
3Com Bulletin Board Service (3Com BBS)  
SM  
3ComFacts automated fax service  
World Wide Web Site  
Access the latest networking information on the  
3Com Corporation World Wide Web site by entering  
the URL into your Internet browser:  
This service provides access to online support information  
such as technical documentation and software library, as  
well as support options ranging from technical education  
to maintenance and professional services.  
3Com FTP Site  
Download drivers, patches, software, and MIBs across the  
Internet from the 3Com public FTP site. This service is  
available 24 hours a day, 7 days a week.  
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62  
APPENDIX B: TECHNICAL SUPPORT  
To connect to the 3Com FTP site, enter the following  
information into your FTP client:  
Hostname: ftp.3com.com (or 192.156.136.12)  
Username: anonymous  
Password: <your Internet e-mail address>  
A user name and password are not needed with Web browser  
software such as Netscape Navigator and Internet Explorer.  
3Com Bulletin Board Service  
The 3Com BBS contains patches, software, and drivers for  
3Com products. This service is available through analog  
modem or digital modem (ISDN) 24 hours a day, 7 days  
a week.  
Access by Analog Modem  
To reach the service by modem, set your modem to 8 data  
bits, no parity, and 1 stop bit. Call the telephone number  
nearest you:  
Country  
Australia  
Brazil  
Data Rate  
Telephone Number  
61 2 9955 2073  
55 11 5181 9666  
33 1 6986 6954  
4989 62732 188  
852 2537 5601  
39 2 27300680  
81 3 3345 7266  
52 5 520 7835  
Up to 14,400 bps  
Up to 14,400 bps  
Up to 14,400 bps  
Up to 28,800 bps  
Up to 14,400 bps  
Up to 14,400 bps  
Up to 14,400 bps  
Up to 28,800 bps  
Up to 14,400 bps  
Up to 14,400 bps  
Up to 28,800 bps  
Up to 53,333 bps  
France  
Germany  
Hong Kong  
Italy  
Japan  
Mexico  
P.R. of China  
Taiwan, R.O.C.  
U.K.  
86 10 684 92351  
886 2 377 5840  
44 1442 438278  
1 847 262 6000  
U.S.A.  
Access by Digital Modem  
ISDN users can dial in to the 3Com BBS using a digital modem  
for fast access up to 64 Kbps. To access the 3Com BBS using  
ISDN, use the following number:  
1 847 262 6000  
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Support from Your Network Supplier  
63  
3ComFacts Automated Fax Service  
The 3ComFacts automated fax service provides technical  
articles, diagrams, and troubleshooting instructions on  
3Com products 24 hours a day, 7 days a week.  
Call 3ComFacts using your Touch-Tone telephone:  
1 408 727 7021  
Support from Your Network Supplier  
If additional assistance is required, contact your network  
supplier. Many suppliers are authorized 3Com service  
partners who are qualified to provide a variety of services,  
including network planning, installation, hardware  
maintenance, application training, and support services.  
When you contact your network supplier for assistance,  
have the following information ready:  
Product model name, part number, and serial number  
A list of system hardware and software, including  
revision levels  
Diagnostic error messages  
Details about recent configuration changes, if applicable  
If you are unable to contact your network supplier, see the  
following section on how to contact 3Com.  
Support from 3Com  
If you are unable to obtain assistance from the 3Com online  
technical resources or from your network supplier, 3Com  
offers technical telephone support services. To nd out more  
about your support options, please call the 3Com technical  
telephone support phone number at the location nearest you.  
When you contact 3Com for assistance, have the following  
information ready:  
Product model name, part number, and serial number  
A list of system hardware and software, including  
revision levels  
Diagnostic error messages  
Details about recent configuration changes, if applicable  
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64  
APPENDIX B: TECHNICAL SUPPORT  
Below is a list of worldwide technical telephone  
support numbers:  
Country  
Telephone Number  
Asia Pacific Rim  
Australia  
Hong Kong  
India  
Indonesia  
Japan  
1 800 678 515  
800 933 486  
61 2 9937 5085  
001 800 61 009  
0031 61 6439  
Malaysia  
New Zealand  
Pakistan  
Philippines  
P.R. of China  
Singapore  
S. Korea  
1800 801 777  
0800 446 398  
61 2 9937 5085  
1235 61 266 2602  
10800 61 00137 or 021 6350 1590  
800 6161 463  
From anywhere in S. Korea: 82 2 3455 6455  
From Seoul:  
Taiwan, R.O.C.  
Thailand  
00798 611 2230  
0080 611 261  
001 800 611 2000  
Europe  
From anywhere in Europe, call: +31 (0)30 6029900 phone  
+31 (0)30 6029999 fax  
From the following European countries, you may use the  
toll-free numbers:  
Austria  
06 607468  
0800 71429  
800 17309  
Belgium  
Denmark  
Finland  
France  
Germany  
Hungary  
Ireland  
0800 113153  
0800 917959  
0130 821502  
00800 12813  
1 800 553117  
177 3103794  
1678 79489  
0800 0227788  
800 11376  
0800 3111206  
05 05313416  
0800 995014  
900 983125  
020 795482  
0800 55 3072  
0800 966197  
Israel  
Italy  
Netherlands  
Norway  
Poland  
Portugal  
South Africa  
Spain  
Sweden  
Switzerland  
U.K.  
(continued)  
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Returning Products for Repair  
65  
Country  
Telephone Number  
Latin America  
Argentina  
Brazil  
AT&T +800 666 5065  
0800 13 3266  
1230 020 0645  
Chile  
Colombia  
Mexico  
Peru  
Puerto Rico  
Venezuela  
98012 2127  
01 800 CARE (01 800 2273)  
AT&T +800 666 5065  
800 666 5065  
AT&T +800 666 5065  
North America  
1 800 NET 3Com (1 800 638 3266)  
Returning Products for Repair  
Before you send a product directly to 3Com for repair, you  
must first obtain a Return Materials Authorization (RMA)  
number. Products sent to 3Com without RMA numbers will  
be returned to the sender unopened, at the senders expense.  
To obtain an RMA number, call or fax:  
Country  
Telephone Number Fax Number  
Asia, Pacific Rim  
65 543 6500  
65 543 6348  
Europe, South Africa, + 44 1442 435860  
and Middle East  
+ 44 1442 435718  
From the following European countries, you may call the toll-free  
numbers; select option 2 and then option 2:  
Austria  
06 607468  
0800 71429  
800 17309  
Belgium  
Denmark  
Finland  
France  
Germany  
Hungary  
Ireland  
0800 113153  
0800 917959  
0130 821502  
00800 12813  
1800553117  
177 3103794  
1678 79489  
0800 0227788  
800 11376  
00800 3111206  
05 05313416  
0800 995014  
900 983125  
020 795482  
0800 55 3072  
0800 966197  
Israel  
Italy  
Netherlands  
Norway  
Poland  
Portugal  
South Africa  
Spain  
Sweden  
Switzerland  
U.K.  
(continued)  
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66  
APPENDIX B: TECHNICAL SUPPORT  
Country  
Telephone Number Fax Number  
Latin America  
U.S.A. and Canada  
1 408 326 2927  
1 408 326 3355  
1 408 326 7120  
1 800 NET 3Com  
(1 800 638 3266)  
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GLOSSARY  
10BASE-T  
Institute of Electrical and Electronics Engineers (IEEE) 802.3  
standard for Ethernet signaling over unshielded  
twisted-pair wire at 10 Mbps.  
100BASE-TX  
IEEE 802.3u standard for Ethernet signaling over  
Category 5 unshielded twisted-pair wire at 100 Mbps.  
BIOS  
Basic Input/Output System. Collection of services on a  
ROM (read-only memory) chip that enables hardware  
and software, operating systems and applications, and  
applications and users to communicate with one another.  
The BIOS on a PC can be updated and expanded to  
handle newer devices and greater demands. To get a  
newer BIOS, you replace the ROM chip in your PC with  
an upgraded chip.  
bus mastering  
Method for accessing the PC bus in which a card or  
device takes control of the bus in order to send data onto  
the bus directly, without help from the central processing  
unit (CPU).  
client/server network  
Networking architecture in which all shared applications  
and files are stored on one central computer known as a  
server. Network users (known as clients) can store their  
own files on their own PCs and then use the server to  
access shared files and peripherals, such as printers, fax  
machines, and modems.  
Ethernet  
IEEE standard network protocol that specifies how data  
is placed on and retrieved from a common transmission  
medium. Ethernet has a transfer rate of 10 Mbps.  
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68  
GLOSSARY  
Fast Ethernet  
100 Mbps technology based on the 10BASE-T Ethernet  
network protocol.  
full-duplex  
Communication setup in which a device or line transmits  
data simultaneously in both directions (the PC is sending  
and receiving data at the same time).  
half-duplex  
hub  
Communication setup in which a device or line transmits  
data in only one direction at a time.  
Device that serves as the central location for attaching  
wires from workstations. A hub can be passive, when there  
is no amplication of the signals; or active, when it is used  
like a repeater to provide an extension of the cable that  
connects to a workstation.  
network  
Group of computers and other associated devices, such as  
printers, fax machines, and modems, that are connected to  
one another so they can share resources and information.  
network driver optimization  
Driver option that specifies how to optimize performance  
of the network driver for your environment.  
network operating system (NOS)  
System software that runs on the networks le server, with  
a smaller component that runs on each device attached to  
the network. Examples of client/server NOSs include Novell  
NetWare and Microsoft NT. Examples of peer-to-peer NOSs  
include Windows 95 and Windows 98.  
NDIS  
Network Driver Interface Specification. Defines the network  
driver architecture and interfaces that let a PC support  
NICs. This architecture provides a standardized way to write  
drivers for network NICs.  
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GLOSSARY  
69  
PCI  
Peripheral Component Interconnect. Advanced,  
high-performance local bus that supports multiple peripheral  
devices. A local bus is one that is connected directly to the  
PCs central processing unit (CPU).  
peer-to-peer network  
Networking architecture in which PCs and other devices,  
such as printers and fax machines, are connected directly  
to one another or to a central point, usually a hub. Unlike a  
client/server network, a peer-to-peer network does not use  
a server.  
server  
PC that provides access to resources or services such as files,  
printers, fax machines, and e-mail on a client/server network.  
Servers may be distinguished by the elements to which they  
control access (for example, on a client/server network there  
may be a print server, le server, or communications server).  
switch  
Device that can direct network traffic among several  
Ethernet networks.  
unshielded twisted pair (UTP) cabling  
Most commonly used type of twisted-pair cable.  
Twisted-pair cable consists of copper wires surrounded by  
an insulator. Two wires are twisted together (the twisting  
prevents interference problems) to form a pair, and the pair  
forms a circuit that can transmit data. A cable is a bundle of  
one or more twisted pairs surrounded by an insulator.  
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INDEX  
compliance, Year 2000 10  
configuration settings  
changing 54  
default 51  
displaying 52  
connecting to the network 20  
conventions  
notice icons, About This Guide  
text, About This Guide 10  
CPU utilization 51  
Numbers  
100BASE-TX  
cabling 17  
link LED 36  
operation 59  
specifications 59  
10BASE-T  
9
cabling 17  
link LED 36  
operation 58  
specifications 59  
3Com bulletin board service (3Com  
BBS) 45, 62  
3Com icon, in Windows system tray  
removing 49  
D
default configuration settings 51  
determining Windows 95 version 23  
diagnostic tests  
NIC Echo test 40  
NIC self-tests 39  
diagnostics program, starting 37  
drivers, installing  
Windows 95  
showing 38  
3Com NIC Diagnostics program  
changing configuration 54  
starting 37  
3Com support services 44  
3Com URL 61  
version A 24  
version B 26  
3ComFacts 63  
Windows 98 28  
Windows NT  
version 3.51 31  
version 4.0 30  
duplex mode  
A
accessing  
Help 43  
online support 44  
changing 54  
default setting 51  
viewing 52  
B
bulletin board service 45, 62  
E
Echo test, running 40  
EIA/TIA 568 standards 57  
EISA slots 18  
environmental operating range 57  
Ethernet protocol  
characteristics of 58  
overview 14  
C
cabling  
requirements 16, 57  
specifications 17  
troubleshooting 35  
client 13  
client/server networks 14  
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72  
INDEX  
network interface 57  
network interface cards, overview 15  
network operating system (NOS) 13  
network supplier support 63  
network, connecting to 20  
networking, overview 12  
NIC  
F
Fast Ethernet protocol  
characteristics of 59  
overview 14  
fax service (3ComFacts) 63  
frequently asked questions 48  
viewing online 44  
configuration settings 51  
connecting to the network 20  
handling 18  
installing drivers 23  
installing in the PC 18  
LEDs 15, 36  
H
hardware, required 16  
Help, accessing 43  
hub 13  
self-tests 39  
software, removing 46  
specifications 57  
NOS (network operating system) 13  
I
installing drivers  
verifying successful installation 32  
Windows 95 23  
Windows 98 28  
Windows NT 30  
installing the NIC 17  
interrupts 49  
O
online support services 44  
online technical services 61  
operating voltage requirements 57  
ISA slots 18, 49  
P
PCI slots 18, 19, 49  
peer-to-peer networks 13  
physical dimensions 57  
power requirements 57  
K
KnowledgeBase, viewing online 44  
L
LEDs  
R
description 15  
for troubleshooting 36  
release notes, viewing online 44  
removing NIC software 46  
requirements  
cabling 16, 17, 57  
hardware 16  
software 16  
M
media type  
changing 54  
default setting 51  
viewing 52  
MIBs 61  
returning products for repair 65  
running diagnostic tests 39  
S
self-tests, NIC 39  
server 13  
shielded twisted-pair (STP) cable 58  
software, required 16  
specifications 57  
static electricity 18  
STP cable 58  
support services 44  
system tray, removing 3Com icon  
from 49  
N
network architectures  
client/server 14  
peer-to-peer 13  
network cable, maximum length 17  
network driver optimization  
changing 54  
default setting 51  
viewing 52  
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INDEX  
73  
Windows NT  
version 3.51  
T
technical support  
3Com URL 61  
bulletin board service 62  
fax service 63  
confirming NIC installation 34  
installing driver 31  
NIC diagnostic tests,  
running 39  
network suppliers 63  
product repair 65  
tests  
removing NIC software 47  
version 4.0  
confirming NIC installation 34  
installing driver 30  
NIC diagnostic tests,  
running 39  
Echo 40  
NIC 39  
troubleshooting 35  
cable 35  
removing NIC software 47  
LEDs 36  
Windows system tray  
running NIC self-tests 39  
testing network connection 40  
using the 3Com NIC Diagnostics  
program 37  
removing 3Com icon from 49  
showing 3Com icon 38  
World Wide Web (WWW) 61  
twisted-pair cable  
100BASE-TX 59  
10BASE-T 59  
Y
Year 2000 compliance 10  
yellow exclamation point, next to NIC  
name 48  
description 58, 69  
U
unshielded twisted-pair (UTP)  
cable 17, 20, 58  
URL 61  
V
verifying successful driver  
installation 32  
viewing online support databases 44  
W
Windows 95  
confirming NIC installation 32  
determining the version 23  
installing driver 23  
NIC diagnostic tests, running 39  
removing NIC software 46, 47  
Windows 98  
confirming NIC installation 32  
installing driver 28  
NIC diagnostics tests, running 39  
removing NIC software 46  
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3Com Corporation LIMITED WARRANTY  
HARDWARE  
3Com warrants its hardware products to be free from defects in workmanship and materials, under  
normal use and service, for the following lengths of time from the date of purchase from 3Com or its  
authorized reseller:  
Network Interface Cards  
Lifetime  
1 year*  
Other hardware products  
*unless otherwise specified above  
Spare parts and spares kits  
90 days  
If a product does not operate as warranted above during the applicable warranty period, 3Com shall,  
at its option and expense, repair the defective product or part, deliver to Customer an equivalent  
product or part to replace the defective item, or refund to Customer the purchase price paid for the  
defective product. All products that are replaced will become the property of 3Com. Replacement  
products may be new or reconditioned. Any replaced or repaired product or part has a ninety (90) day  
warranty or the remainder of the initial warranty period, whichever is longer.  
SOFTWARE  
3Com warrants that the software programs licensed from it will perform in substantial conformance  
to the program specifications therefor for a period of ninety (90) days from the date of purchase from  
3Com or its authorized reseller. 3Com warrants the media containing software against failure during the  
warranty period. No updates are provided. 3Com’s sole obligation with respect to this express warranty  
shall be (at 3Com’s discretion) to refund the purchase price paid by Customer for any defective software  
products, or to replace any defective media with software which substantially conforms to applicable  
3Com published specifications. Customer assumes responsibility for the selection of the appropriate  
applications program and associated reference materials. 3Com makes no warranty or representation  
that its software products will meet Customer’s requirements or work in combination with any  
hardware or applications software products provided by third parties, that the operation of the software  
products will be uninterrupted or error free, or that all defects in the software products will be corrected.  
For any third party products listed in the 3Com software product documentation or specifications as  
being compatible, 3Com will make reasonable efforts to provide compatibility, except where the  
non-compatibility is caused by a “bug” or defect in the third party's product.  
YEAR 2000 WARRANTY  
In addition to the Hardware Products Warranty and Software Products Warranty identified above, 3Com  
warrants that all Heritage 3Com products sold or licensed to Customer on and after January 1, 1998  
that are date sensitive will continue performing properly with regard to such date data on and after  
January 1, 2000, provided that all other products used by Customer in connection or combination  
with the 3Com products, including hardware, software, and firmware, accurately exchange date  
data with the 3Com products, with the exception of those products identified at 3Com’s Web site,  
a “Heritage 3Com product” if it is a member of a product family which was manufactured by 3Com  
prior to its merger with US Robotics Corporation. This Year 2000 limited warranty does not apply to  
Heritage US Robotics Corporation products. If it appears that any such product does not perform  
properly with regard to such date data on and after January 1, 2000, and Customer notifies 3Com  
before the later of April 1, 2000, or ninety (90) days after purchase of the product from 3Com or its  
authorized reseller, 3Com shall, at its option and expense, provide a software update which would  
effect the proper performance of such product, repair such product, deliver to Customer an equivalent  
product to replace such product, or if none of the foregoing is feasible, refund to Customer the  
purchase price paid for such product.  
Any software update or replaced or repaired product will carry a Year 2000 Warranty for ninety  
(90) days or until April 1, 2000, whichever is later.  
OBTAINING WARRANTY SERVICE  
Customer must contact 3Com’s Corporate Service Center or an Authorized 3Com Service Center within  
the applicable warranty period to obtain warranty service authorization. Dated proof of purchase may be  
required. Products returned to 3Com’s Corporate Service Center must be pre-authorized by 3Com with  
a Return Material Authorization (RMA) number marked on the outside of the package, and sent prepaid  
and packaged appropriately for safe shipment, and it is recommended that they be insured. The repaired  
or replaced item will be shipped to Customer, at 3Com’s expense, not later than thirty (30) days after  
receipt of the defective product by 3Com.  
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Dead- or Defective-on-Arrival. In the event a product completely fails to function or exhibits a defect  
in materials or workmanship within the first forty-eight (48) hours of installation but no later than  
thirty (30) days after the date of purchase, and this is verified by 3Com, it will be considered dead-  
or defective-on-arrival (DOA) and a replacement shall be provided by advance replacement. The  
replacement product will normally be shipped not later than three (3) business days after 3Com’s  
verification of the DOA product, but may be delayed due to export or import procedures. When an  
advance replacement is provided and Customer fails to return the defective product to 3Com within  
fifteen (15) days after shipment of the replacement, 3Com will charge Customer for the replacement  
product, at list price.  
3Com shall not be responsible for any software, firmware, information, or memory data of Customer  
contained in, stored on, or integrated with any products returned to 3Com for repair, whether under  
warranty or not.  
WARRANTIES EXCLUSIVE  
IF A 3COM PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE, CUSTOMER’S SOLE REMEDY FOR  
BREACH OF THAT WARRANTY SHALL BE REPAIR, REPLACEMENT, OR REFUND OF THE PURCHASE  
PRICE PAID, AT 3COM’S OPTION. TO THE FULL EXTENT ALLOWED BY LAW, THE FOREGOING  
WARRANTIES AND REMEDIES ARE EXCLUSIVE AND ARE IN LIEU OF ALL OTHER WARRANTIES, TERMS,  
OR CONDITIONS, EXPRESS OR IMPLIED, EITHER IN FACT OR BY OPERATION OF LAW, STATUTORY OR  
OTHERWISE, INCLUDING WARRANTIES, TERMS, OR CONDITIONS OF MERCHANTABILITY, FITNESS FOR  
A PARTICULAR PURPOSE, AND SATISFACTORY QUALITY. 3COM NEITHER ASSUMES NOR AUTHORIZES  
ANY OTHER PERSON TO ASSUME FOR IT ANY OTHER LIABILITY IN CONNECTION WITH THE SALE,  
INSTALLATION, MAINTENANCE OR USE OF ITS PRODUCTS.  
3COM 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 CUSTOMER’S OR  
ANY THIRD PERSON'S MISUSE, NEGLECT, IMPROPER INSTALLATION OR TESTING, UNAUTHORIZED  
ATTEMPTS TO REPAIR OR MODIFY, OR ANY OTHER CAUSE BEYOND THE RANGE OF THE INTENDED  
USE, OR BY ACCIDENT, FIRE, LIGHTNING, OR OTHER HAZARD.  
LIMITATION OF LIABILITY  
TO THE FULL EXTENT ALLOWED BY LAW, 3COM ALSO EXCLUDES FOR ITSELF AND ITS SUPPLIERS ANY  
LIABILITY, WHETHER BASED IN CONTRACT OR TORT (INCLUDING NEGLIGENCE), FOR INCIDENTAL,  
CONSEQUENTIAL, INDIRECT, SPECIAL, OR PUNITIVE DAMAGES OF ANY KIND, OR FOR LOSS OF  
REVENUE OR PROFITS, LOSS OF BUSINESS, LOSS OF INFORMATION OR DATA, OR OTHER FINANCIAL  
LOSS ARISING OUT OF OR IN CONNECTION WITH THE SALE, INSTALLATION, MAINTENANCE, USE,  
PERFORMANCE, FAILURE, OR INTERRUPTION OF ITS PRODUCTS, EVEN IF 3COM OR ITS AUTHORIZED  
RESELLER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES, AND LIMITS ITS LIABILITY  
TO REPAIR, REPLACEMENT, OR REFUND OF THE PURCHASE PRICE PAID, AT 3COM’S OPTION. THIS  
DISCLAIMER OF LIABILITY FOR DAMAGES WILL NOT BE AFFECTED IF ANY REMEDY PROVIDED HEREIN  
SHALL FAIL OF ITS ESSENTIAL PURPOSE.  
DISCLAIMER  
Some countries, states, or provinces do not allow the exclusion or limitation of implied warranties or  
the limitation of incidental or consequential damages for certain products supplied to consumers or the  
limitation of liability for personal injury, so the above limitations and exclusions may be limited in their  
application to you. When the implied warranties are not allowed to be excluded in their entirety, they  
will be limited to the duration of the applicable written warranty. This warranty gives you specific legal  
rights which may vary depending on local law.  
GOVERNING LAW  
This Limited Warranty shall be governed by the laws of the State of California, U.S.A. excluding its  
conflicts of laws principles and excluding the United Nations Convention on Contracts for the  
International Sale of Goods.  
3Com Corporation, 5400 Bayfront Plaza, Santa Clara, CA 95052-8145 (408) 326-5000  
FCC CLASS B STATEMENT  
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:  
1
2
This device may not cause harmful interference, and  
This device must accept any interference received, including interference that may cause  
undesired operation.  
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WARNING: 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, and the Canadian Department of Communications  
Equipment Standards entitled, “Digital Apparatus,” ICES-003.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 the one which the receiver is  
connected to.  
Consult the dealer or an experienced radio/TV technician for help.  
The user may find the following booklet prepared by the Federal Communications Commission helpful:  
The Interference Handbook  
This booklet is available from the U.S. Government Printing Office, Washington, D.C. 20402. Stock No.  
004-000-00345-4.  
NOTE: In order to maintain compliance with the limits of a Class B digital device, 3Com requires that  
you use quality interface cables when connecting to this device. Changes or modifications not expressly  
approved by 3Com could void the user’s authority to operate this equipment. Refer to the manual for  
specifications on cabling types.  
FCC DECLARATION OF CONFORMITY  
We declare under our sole responsibility that the  
Model:  
Description:  
3CSOHO100-TX  
OfficeConnect Fast Ethernet Network Interface Card  
to which this declaration relates, is in conformity with the following standards or other normative  
documents:  
ANSI C63.4-1992 Methods of Measurement  
Federal Communications Commission 47 CFR Part 15, subpart B  
15.107 (e) Class B Conducted Limits  
15.109 (g) Class B Radiated Emissions Limits  
3Com Corporation, 5400 Bayfront Plaza, P.O. Box 58145, Santa Clara, CA 95052-8145  
3COM END USER SOFTWARE LICENSE AGREEMENT  
IMPORTANT: Read Before Using This Product  
YOU SHOULD CAREFULLY READ THE FOLLOWING TERMS AND CONDITIONS BEFORE  
USING THIS PRODUCT. IT CONTAINS SOFTWARE, THE USE OF WHICH IS LICENSED BY 3COM  
CORPORATION (“3COM”) TO ITS CUSTOMERS FOR THEIR USE ONLY AS SET FORTH BELOW. IF  
YOU DO NOT AGREE TO THE TERMS AND CONDITIONS OF THIS AGREEMENT, DO NOT USE THE  
SOFTWARE. USING ANY PART OF THE SOFTWARE INDICATES THAT YOU ACCEPT THESE TERMS.  
LICENSE: 3Com grants you a nonexclusive license to use the accompanying software program(s) (the  
“Software”) subject to the terms and restrictions set forth in this License Agreement. You are not  
permitted to lease, rent, distribute or sublicense the Software or to use the Software in a time-sharing  
arrangement or in any other unauthorized manner. Further, no license is granted to you in the human  
readable code of the Software (source code). Except as provided below, this License Agreement does  
not grant you any rights to patents, copyrights, trade secrets, trademarks, or any other rights in respect  
to the Software.  
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The Software is licensed to be used on any workstation or any network server owned by or leased to  
you, provided that the Software is used only in connection with a 3Com adapter. You may reproduce  
and provide one (1) copy of the Software and supporting documentation for each such workstation or  
network server on which the Software is used as permitted hereunder. Otherwise, the Software and  
supporting documentation may be copied only as essential for backup or archive purposes in support  
of your use of the Software as permitted hereunder. You must reproduce and include all copyright  
notices and any other proprietary rights notices appearing on the Software and the supporting  
documentation on any copies that you make.  
NO ASSIGNMENT; NO REVERSE ENGINEERING: You may not transfer or assign the Software and/or  
this License Agreement to another party without the prior written consent of 3Com. If such consent is  
given and you transfer or assign the Software and/or this License Agreement, then you must at the  
same time either transfer any copies of the Software as well as the supporting documentation to the  
same party or destroy any such materials not transferred. Except as set forth above, you may not  
transfer or assign the Software or your rights under this License Agreement.  
Modification, reverse engineering, reverse compiling, or disassembly of the Software is expressly  
prohibited. However, if you are a European Community (“EC”) resident, information necessary to  
achieve interoperability of the Software with other programs within the meaning of the EC Directive  
on the Legal Protection of Computer Programs is available to you from 3Com upon written request.  
EXPORT RESTRICTIONS: You agree that you will not export or re-export the Software or  
accompanying documentation (or any copies thereof) or any products utilizing the Software or such  
documentation in violation of any applicable laws or regulations of the United States and the country  
in which you obtained them.  
TRADE SECRETS; TITLE: You acknowledge and agree that the structure, sequence and organization  
of the Software are the valuable trade secrets of 3Com and its suppliers. You agree to hold such trade  
secrets in confidence. You further acknowledge and agree that ownership of, and title to, the Software  
and all subsequent copies thereof regardless of the form or media are held by 3Com and its suppliers.  
UNITED STATES GOVERNMENT LEGEND: All technical data and computer software are commercial  
in nature and developed solely at private expense. The Software is delivered as “Commercial Computer  
Software” as defined in DFARS 252.227-7014 (June 1995) or as a “commercial item” as defined in  
FAR 2.101(a) and as such is provided with only such rights as are provided in this License Agreement,  
which is 3Com’s standard commercial license for the Software. Technical data is provided with limited  
rights only as provided in DFAR 252.227-7015 (Nov. 1995) or FAR 52.227-14 (June 1987), whichever is  
applicable. You agree not to remove or deface any portion of any legend provided on any licensed  
program or documentation delivered to you under this License Agreement.  
TERM AND TERMINATION: This license will expire fifty (50) years from the date that you first use the  
Software, if it is not earlier terminated. You may terminate it at any time by destroying the Software  
and documentation together with all copies and merged portions in any form. It will also terminate  
immediately if you fail to comply with any term or condition of this License Agreement. Upon such  
termination you agree to destroy the Software and documentation, together with all copies and  
merged portions in any form.  
GOVERNING LAW: This License Agreement shall be governed by the laws of the State of California  
as such laws are applied to agreements entered into and to be performed entirely within California  
between California residents and by the laws of the United States. You agree that the United Nations  
Convention on Contracts for the International Sale of Goods (1980) is hereby excluded in its entirety  
from application to this License Agreement.  
LIMITED WARRANTY; LIMITATION OF LIABILITY: All warranties and limitations of liability applicable  
to the Software are as stated on the Limited Warranty Card or in the product manual, whether in paper  
or electronic form, accompanying the Software. Such warranties and limitations of liability are  
incorporated herein in their entirety by this reference.  
SEVERABILITY: In the event any provision of this License Agreement is found to be invalid, illegal or  
unenforceable, the validity, legality and enforceability of any of the remaining provisions shall not in  
any way be affected or impaired and a valid, legal and enforceable provision of similar intent and  
economic impact shall be substituted therefor.  
ENTIRE AGREEMENT: This License Agreement sets forth the entire understanding and agreement  
between you and 3Com, supersedes all prior agreements, whether written or oral, with respect to the  
Software, and may be amended only in a writing signed by both parties.  
3Com is a registered trademark of 3Com Corporation.  
3Com Corporation, 5400 Bayfront Plaza, P.O. Box 58145, Santa Clara, CA 95052-8145. (408) 326-5000  
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