Ah sounds like a Splash server (a RIP that fit into a regular computer), these required an adb dongle to work with their software (which is useless without the actual color laser copier/printer).
We have one (with PCI) on a machine at work. Doesn't sound like you'll be able to do much with it. I was curious and thought it might have been a precursor to the Radius VideoVision (I think supermac was bought by Radius back in its day).
Aaaah, when memories fade... Oh well.
[ 10-23-2001: Message edited by: bluedog ]