Well I figured the BNC was 10base2 networking, and there are some headers on the card that could be the proprietary connectors for the mobo/case connections. I didn't see the name branding on there, though.
In retrospect it has a Crystal chip, and a Phillips chip. The Phillips is likely a decoder chip for video, and the Crystal is most likely a sound chip of some variety. This seems to support the theory that it's a capture or encoding/decoding card of some sort. My initial theory was that the Phillips chip was for encoding video, and the Crystal chip for encoding audio, they'd both be muxed into a signal and sent over the BNC (and input would run back up the BNC) which'd be networked with the controlling PC.
Anywho whether it's a RILOE, a capture card, or a decoder, etc.. I'm still rather captivated by the mystery. I hope you find out how to use it to do something. :D
And this is where I come in...
The crystal audio chips are quite cool, they are sound blaster compatible (also able to run "windows sound system" on DOS games that used it) and feature a unique version of OPL3: Crystal FM synthesis. I actually prefer Crystal FM chip over the real OPL3... but don't tell any OPL3 enthusiasts that!
I do have a cool SCSI jumpered sound blaster 16 though. I use them both
Good job completely killing that card BTW putting it down on the shag carpet like that.... Bye-bye RAM's, Bye-Bye logic chips...
Nah... I wore a hoodie and walked on shag carpet all day touching my computers. It takes a lot to kill computer components. Obviously I am extra careful with expensive vintage electronics, but for ordinary every day stuff, nah. I never once killed an electronic component with carpet or such. I think it'd be hard to do.