This self extracting file contains the drivers, utilities, and diagnostic program for the 3Com 3C905C-TXM LAN Adapter. Download this file to your hard drive, then click on 3c905.exe to install the drivers. PLEASE NOTE: This will install the 3Com utilities and diagnostic programs as well as the drivers. This file is over 36MB and will take several hours to download. If you do not want these additional programs, you can obtain the drivers only by downloading the 905C98D1 and 905C98D2 files below.