I think that the main difference is that the series 233 'self-senses' the bus speed ie 100 or 133 mhz; therefore the same card can go in any (most?) of the Apple G4 models. Special cube kit is probably the fan & instructions. HTH James -- James Knight Norwich, UK james at twoknight.com On 2/3/03 9:07 pm, "Joakim Skog" <joakim.skog at home.se> wrote: > I might have missed this, but what's the difference between the old card > from Powerlogix and the new Series 233 that requires a special "cube-kit"? > > Regards, Joakim > > >