This file is complement of 3c589x_1.exe you have to download the two of them.
V5.7 LAN Installation Diskette #2 for the 3Com Megahertz 10 Mbps LAN PC Card. Notes This is Installation Diskette #2 that ships with the latest shipping 589 series adapters. It includes the DOS ODI and NDIS 2 drivers. It also includes the DOS Installation/Diagnostics. Please note that the OEMSETUP file for WFW311 is located in the IBM_40 directory. The Diagnostics included with this diskette should only be used with the 3CCE589EC / 3CXE589EC / 3CCE589ET / 3CXE589ET adapters that it shipped with. These drivers are compatible with the 3C589, 3C589B, 3C589C, 3C589D, 3CXE589D, 3CCE589E, and 3CXE589E