I cracked the thing open and took a look at what was inside.

20 gig hard drive (ide)

All three PCI slots are filled, an Ethernet card, a USB card and a FireWire Card.

the Sonnet upgrade is there as well, an Encore G4, I'm guessing the 500 MHz version ( I looked it up.)

This thing is getting better all the time.

There was another hard drive installed at some point, I think, in the bay above the ZIP drive, the drive is gone, but the sled is there and there are mounting screws inside a resealable baggie taped to the sled.

I noticed on the Wings card, there are a couple of connectors, for what? Daughterboards? And also one that looks a bit like a PCI slot?

Also, on the motherboard, there is an SGRAM slot, which I guess is for on-board video.

I hope this thing boots.