Dell Support Drivers & Downloads Driver File Formats

Driver Details

3Com 3C905C-TXM 10/100 Ethernet Adapter, 3C900B TPC, v. 5.21, A00
3Com 3C900B TPC and 3C905C-TXM 10/100 Ethernet Adapter Diagnostic Package for multiple OS, version 5.21, A00
Release Date 31/01/2001
Importance: Optional
Version: 5.21,A00

The following formats are available for the file you have selected

File Format: Hard-Drive Download File Download File
File Name:


Description: This file format consists of an archive of files that may be decompressed to a directory on the hard drive. The installation can then be done from that directory.
Download Type: HTTP
File Size: 474KB

Previous Versions

No previous version available.


3Com 3C900B TPC and 3C905C-TXM 10/100 Ethernet Adapter Diagnostic Package for multiple OS, version 5.21, A00

Level of Importance:Optional

Dell recommends the customer review specifics about the update to determine if it applies to your system. The update contains changes that impact only certain configurations, or provides new features that may/may not apply to your environment.


Dimension 2100
Dimension 4100
Dimension 4200 (Germany and Japan Only)
Dimension 4300
Dimension 4300S
Dimension 4400
Dimension 8200
Dimension L___cx
Dimension XPS B___r
OptiPlex GX115
OptiPlex GX150
Precision 220
Precision 330
Precision 420
Precision 620
Operating Systems
MS Windows 95
MS Windows 98
MS Windows ME
MS Windows NT 4.0
MS Windows 2000

Applies to

  • Dell Device
  • 3C900B TPC

Fixes & Enhancements

Execution of this file creates a bootable DOS diagnostic diskette.

Installation instructions

1. Download the file from the Dell website to your hard drive.  It is recommended you download it to your desktop for easy access.
2. Place a known good formatted floppy disk in your floppy disk drive.
2. Double-click on the file you just downloaded.
3. Follow the on screen instructions.  The program will create a bootable floppy disk
4. Place the floppy disk you just created in the floppy disk drive.
5. Reboot the computer. The diagnostic will start on its own.            


To ensure the integrity of your download, please verify the checksum value.

This is an optional process and is not required for the downloading and installation of device drivers from this site.
Not Available
Not Available

By downloading, you accept the terms of the Dell Software License Agreement.