                        3Com (R) Corporation
                   EtherDisk (R) Diskette for the
         3C90X EtherLink XL 10/100 / EtherLink XL NIC Family
          Installing the NDIS 3.0/4.0 Drivers for Windows NT

For increased performance or running on non-intel based systems read 
the Advanced Installation Options section at the end of this file.

Windows NT 4.0 Installation Instructions
----------------------------------------
The following steps describe how to install your 3Com network NIC in a
computer running Windows NT 4.0. 

1.  Start Windows NT.

2.  Click the start menu in the lower right corner of the screen.  Choose
    Settings, Control Panel.  In the Control Panel, double-click the Network 
    icon.

3.  Click the Adapters tab in the Network Control Panel.

Note:  If Networking has not been installed in your system before, 
       when you open the Network control panel Windows NT will ask 
       you if you want to install networking.  Click Yes and refer 
       to the Windows NT Documentation for instructions. If you have
       previously installed a Windows NT service pack, you need to
       reinstall the service pack after the network installation is 
       complete to insure the Windows NT network components are
       updated to the level of the service pack.

4.  Click Add...

5.  In the Select Network Adapter window, Click Have Disk.

6.  Insert the EtherDisk #1 diskette into drive A: and press
    Enter.

7.  In the Select OEM Option box, select the entry that matches the
    3Com XL NIC you are installing.

8.  Click the OK button. Files are read from EtherDisk 1, and the 3Com
    GUI installer runs.

9.  On the first menu, choose Express Installation and click OK.  The
    program will test the NIC and test the NICs connection to the
    network.  If any tests fail, and error box appears with a message
    about the failure.  Click the help button for help on how to fix
    the problem.  If no computer name or workgroup name is present, the
    GUI will request these names.  Seek help from your network 
    administrator if you don't know what to enter.

10. Click the Finish button to complete the GUI.  Windows NT will prompt
    for diskette #2.  Place EtherDisk #2 in diskette drive A: and click
    OK.  Files are copied from EtherDisk #2.

11. You may be prompted for network configuration information by Windows
    NT.  Seek help from your network administrator if you don't know what
    to enter.

12. In the Network Settings Change window, click Yes to restart 
    your computer. 
        

Windows NT 3.51 Installation Instructions
-----------------------------------------
The following steps describe how to install your 3Com network NIC in a
computer running Windows NT 3.51. 

1.  Start Windows NT.

2.  In the Control panel, double-click the Network icon.

3.  In the Network Settings window, select the existing 3Com driver in    
    the Installed adapters group (if present).

4.  Click Remove.

5.  Click Yes in the Network Settings dialog box.

6.  In the Network Settings window, click Add Adapter.

7.  In the Add Network adapter window, press and hold the down arrow until
    <Other> Requires Disk from Manufacturer appears.

    NOTE: This requires the 3Com EtherDisk #1 diskette.     

8.  Click Continue.

9.  Insert the EtherDisk #1 diskette into drive A: and press
    enter.

10. In the Select OEM Option box, select the entry that matches the
    3Com XL NIC you are installing.
 
11. Click the OK button.

12. Click Close in the Welcome screen that appears.

13. In the Network Settings window, click OK.

    If you are prompted for network information, contact your system     
    administrator for information unique to your network.

14. In the Network Settings Change window, click Restart to restart 
    your computer. 
                                                

Troubleshooting 
---------------
If  a message appears, stating that Windows NT networking is not installed, 
either it has not been installed or a problem has occurred in changing the 
network settings.  If you have never installed networking on this system, 
proceed to the next section, "Installing Windows NT Networking for the 
First Time." Otherwise, follow the steps here to reinstall Windows NT 
networking.

    Reinstalling Windows NT Networking
    ----------------------------------
    NOTE:  This procedure requires Windows NT installation media.

    WARNING:  You will lose all network settings when you perform this 
              procedure.
    
    1.  Click No when asked if you wish to install networking.
    
    2.  In the Network Settings window, select each installed component 
        one after the other, and click Remove after each one to uninstall 
        all NICs and software listed in the window.
    
    3.  Click OK after you have been removed all items.
    
    4.  When asked if you want to reboot, click Restart Now.
    
    5.  When Windows NT restarts, go to the Network Control Panel.
        You will  be asked again if you want to install networking.
    
    6.  In the Network Settings box, click Yes to begin installing 
        Windows NT networking.
    
    7.  Enter the location of the Windows NT installation media.  For 
        example, if your CD-ROM drive is E:, type:
    
        E:\i386
    
    8.  In the NIC Card Detection window, click Do Not Detect.  
    
    9.  In the Add Network NIC window, press and hold the down arrow key 
        until the option <Other> Requires Disk from Manufacturer appears.
    
    10. Insert the EtherDisk 1 diskette into drive A: and press
        enter.
    
    11. In the Select OEM Option box, select the entry that matches the
        3Com XL NIC you are installing.
    
    12. Click the OK button.
    
    13. Select the network protocols you will be using on the network and 
        then click Continue.
    
        Consult your system administrator to find out which protocols to 
        select.
    
    14. Click OK in the Network Settings window to accept the choices you 
        have made.
     
    15. Provide additional information, as required, during the network 
        installation process.
    
        Your computer can auto detect the frame type if needed, but you 
        must obtain IP address and gateway information from your system 
        administrator.
        
    16. Enter the workgroup name or the domain name in the Domain/Workgroup 
        Settings window and click OK.
    
    17. When prompted, press the Restart button on your computer to finish 
        the installation.

    18. If you have installed an NT service pack, you will need to reinstall
        the service pack to make sure the Microsoft network components are
        upgraded to the level of the service pack.
    
    
    Installing Windows NT Networking for the First Time
    ---------------------------------------------------
    If you have never installed networking on this computer, begin at step
    5 in Reinstalling Windows NT Networking.
    
    
ADVANCED INTALLATION OPTIONS
----------------------------

    Running Windows NT on a Non-Intel Processor
    -----------------------------------------

    If your system cannot run the Configuration and Diagnostic 
    program, you may need to set the speed and duplex level of the NIC in 
    the Windows NT registry.  The speed and duplex value of the NIC can be 
    set manually by using the MEDIA keyword.  To set the MEDIA keyword, add 
    the key MEDIA to the registry in the subkey:    
                    
    \\HKEY_lOCAL_NACHINE\SYSTEM\CurrentControlSet\Services\El90x?\Parameters

    NOTE: Multiple subkeys that look like El90x appear right next to 
          each other.  The correct one has a digit in place of the ? 
          in the above expression to represent which NIC it is (for 
          example El90x1).  The incorrect one simply reads El90x.


    The value for the MEDIA keyword should be one from the list below.  The 
    default is NotPresent.  
 
        MEDIA   10HALF     <-- 10 MBPS with half duplex
        MEDIA   10FULL     <-- 10 MBPS with full duplex
        MEDIA   100HALF    <-- 100 MBPS with half duplex
        MEDIA   100FULL    <-- 100 MBPS with full duplex
        MEDIA   AUTO       <-- Driver performs auto configuration
        MEDIA   NotPresent <-- Use settings in NIC

   (%VER WINNT.TXT - Installing the NDIS 3.0 Driver for Windows NT V4.0.0)
