Got a 12" powerbook with 512ram in it. And i was thinking of getting another 512Stick. or maybe even just 256megs for an upgrade. Why is it that the computer shop i normaly go to, is telling me the only stick they can get is Kingston as its what "it needs". There looking in a book regarding the G4 and the powerbook, and there telling me the only stick they can get is a kingston stick.. Nothing again kingston great ram, i just wanna know why any So-Dimm ram wont work? Anyone?