Spent $20 of my hard earned money and picked up a 1.25ghz G4 Mac Mini. The RAM was maxed but the hard drive and combo drive were original, Was going to change the hard drive before I realized it was ATA. I don’t have any 2.5” ATA hard drives larger than 40gb. So I thought I’d install a DVD burner from a dead G5 iMac. It fit perfectly but with it installed, I couldn’t see the hard drive so I assume that they are both set to master. Could change the jumper on the hard drive but that’s more work than it’s worth at this time. Don’t have a lot of need for an internal burner in this mini.