Here's a few pics. I don't think I need a driver to get the system to boot now. Think I just messed something up. But I'd still like to find out what these cards are and what they can do.

The pics are kinda big so I won't embed them.

The first card (beside the PSU) has what looks like a socketed ROM near the nubus connector. You can see it clearly in the second picture:

http://img833.imageshack.us/img833/9127/cimg2669v.jpg

http://img191.imageshack.us/img191/5484/cimg2668m.jpg

The second card is identical except it doesn't have a ROM:

http://img847.imageshack.us/img847/1614/cimg2670.jpg