I have a laptop from Wedge Technologies (Pentium 133 MHz, PCI bus) with a VADEM VG 469 PCMCIA Controller Card. I have tried to install two different PC Cards without success. These cards are:
Megahertz XJEM3288 (Ethernet/Modem combo)
3Com Etherlink III LAN PC Card, model 3C589D (Ethernet)
Both cards are supported by Windows NT 4.0. I have tried the drivers included with NT, as well as the latest drivers provided by the PC Card manufacturers. Nothing seems to work.
The symptom of the problems is that the PC Card adapters are crossed over in red in the PC Card (PCMCIA) window on the NT Control Panel.
Both cards have been used with the very same laptop under MS-DOS, Windows 3.1, Windows 95 and Linux. If I load DOS, both cards still function. Hardware failure can therefore be ruled out.
I have checked VADEM's home page. They give instructions for how to verify that the PC Card controller is working properly. This entails to check the status of the controller in the PC Card (PCMCIA) window on the NT Control Panel. The controller is recognized as Intel Compatible, which according to VADEM is a sign that the controller is operating properly. VADEM does not provide an NT driver for their controller (they rely on Microsoft).
VADEM, 3Com and Megahertz (U.S. Robotics) all claim that the problem must lie with someone else. Wedge Technologies (the laptop reseller) does not have any competency in Windows NT.