Well it was an impulse buy at the last second in the auction so now hopefully it will work in my G4 quicksilver. Anybody know for sure if it will or did I have to buy one with the Apple firmware on it? I hear people installing Pioneer drives all the time so I'm crossing my fingers LOL. Thanks. If so, I plan on picking up a Dual 1.8 G5 PowerMac so I will be switching it to that one since this is the faster burner. While the ones in the G5's were only 4x, right? Thanks.