> both types of slot.   However, it is well known that the 604EV (Mach V) cards 
> do not work in the earlier machines, and the earlier Apple standard CPU cards 
> don't (IIRC) work in the Enhanced machines.  I am uncertain about the dual 
> and four processor cards.

Older CPU cards do in fact work in the Kansas motherboards. Even the dual 
processor cards work on the Kansas motherboards - I've tried it.

John