High-speed ATAPI Internal drive saves space on your desktop Mac® Users Power Mac® G4/G3 (blue & white G3 only) with Mac OS 8.5 through OS X Available 3.5" or 5.25" drive bay and IDE controller with a free connection 1.4MB/sec max sustained Dimensions (LxWxH): 164mm x 101mm x 25mm ATAPI drive, cable and mounting hardware for 3.5" or 5.25" bay install IomegaWare™ software