You're right nothing much comes up searching for info on that card. That's not to say other members don't have info stashed away somewhere. Similar layout, but not exactly the same, to some of the NE2000 comp. ISA nics I've got.
It's unlikey the patch cable is at issue but you've tried another known good one to make sure I gather? Without having the card diagnostics/setup software it's a bit of a crap shoot to find out what is wrong with it. Have you tried it in another ISA slot? You mentioned earlier you tried a pci card. Where did you try that, in one of the ISA slots? The specs for the machine make no mention of it having pci slots at all.
Cards of this era could be set up to auto-sence the connection type or be set up as a dedicated RJ45 or BNC connection. This card could very well be set up for BNC usage currently.
If it were me I'd try and get hold of an ISA card that's well documented, has dos packet drivers and setup software readily available.
It's been a while but under device properties Windows should show the nics IRQ and I/O address. Just as an experiment, no dought wasting more time in the process
, one thing you could try is an older Linux distro, say RH 6.2-7.3 or maybe even DSL, using the info Windows gives you see if the network installation routine can configured correctly and see if networking functions ok. If you try this use the text installer and just do a bare bones text installation-ie no Xwindows, it'll take a while. There are few Linux boot disks with network support for a small selection of nics as well.
Goodness almost forgot the Qnx demo
http://toastytech.com/guis/qnxdemo.html
http://qnx.puslapiai.lt/qnxdemo/qnx_demo_disk.htm
