Was the PowerBase Tanzania based? That was Power Computing's budget model. It had its CPU on the same kind of card as the Power Surge (x500) and their other clones. There were a couple of odd wiring differences in it, which meant it would not work with something. I don't remember what "something" was though. It was either G4s or multi-processors, I think. I think it was multi-processor cards, because IIRC, it was the Catalyst based clones which didn't work properly with G4 processors.

I think the Catalyst system lacks a signal which the G4 requires and the PowerBase required two additional signals (as compared to an x500) for which PCC stole the pins which would ordinarily be used for two of the arbitration signals to a second CPU chip. Hence, Catalyst based systems are G4 impaired (I think Sonnet did a workaround on their 700/800/1000 MHz cards, after they aquired some NewerTech engineering talent) and the PowerBase (Tanzania?) could not use dual processor (2 X 604e) cards.