Right, just the RAM. Besides, the Wally is "only" 292MHz. :I

I think I've got it jury rigged, but I'm going to push my luck. It doesn't look like the daughterboard needs all the contacts to function (FW400 has six lines, but only four are data and the two powerlines come from a separate tap, while the controller is on the G3 processor card and it has *eight* lines coming off it to the daughtercard). So I'm going to swap it back out for the other optical drive that actually accepted disks the G5 burns, switch bezels, try to get that other SO-DIMM on, and if it works, MELT THE DAMN THING SHUT AND NEVER TOUCH IT AGAIN.

I'm still fuming that I was so careless.