Something to try...
3Com PCMCIA Ethernet Adapter Issues
Problems with 3CCFE575BT and an Acer Travelmate 332T (Henning Niss)
Date: 1999, Dec 10
From: David Hinds <firstname.lastname@example.org>
First, recompile the PCMCIA package with PnP BIOS support enabled.
Then try setting PCIC_OPTS="pci_int=1" in /etc/sysconfig/pcmcia.
Thanks --- problem solved by Henning Niss, 1999, Dec 16
to: "Something to try..."