Richard, What they don't tell you is; To remove the door to the tray of the drive. These little tray doors just snap off on most all drives. I went through several CD-Rs before finding this out. Roger Richard Kriss wrote: > One thing 'they' wll not tell you about is the mechanical interface issues > with some drives for the G4's in the gray case. I have a G4-450 AGP and > went thru four CDRW (that all worked) until I found one that would not hang > up on the case door. > > As I recall there were two issues. One the drives with more than one button > gave me problems and some of the treys would hang up on the case door. I > finally got a Sony and it works great. There are better drives on the > market now but make SURE you can get a full refund if it does not fit. Some > charge a 20% restocking fee. > >