Rick, It is from a QS G4. To my knowledge there are no jumpers anywhere on a G4 [processor or logic board], and I have looked just in case I was wrong. I did write Mike at XLR8yourmac to get his take on it but he is a busy guy. I have a PCI Rage128 card I could use and pull the AGP card ... Have to give that a shot I spose, just seems so unlikely. David On Saturday, December 7, 2002, at 05:30 PM, Richard Smykla wrote: > David, > > Assuming the G4 is from a Quicksilver 800: > > I know both of these machines use the same bus speed, but perhaps you > have to set the multiplier jumpers to accomodate the different > processor. I'd check the xlr8yourmac Web site for G4 upgrade > information - these kinds of details are covered. > > You say it was working for the seller's DA G4? Graphics card conflict > seems unlikely, but worth trying another card I suppose. HTH. > > Rick