My friend just gave me a G3 they had at his printing company that was going to be thrown out. It's not too dusty in side, although I haven't booted it yet. There's no hard drive and I've pulled the ram too identify them and this long mystery PCI card. The mystery card has what looks like a mac monitor port and the chips say it's a Twin Turbo 128m8a.

The board is a 820-0987-A, which is a Rev 1, it seems. What does that mean and what are it's limitations?

More details once I have more than 5 minutes with it.