This ScanGear CS Scanner Driver is compatible with existing iMac, G3, G4 & Apple's latest G5 systems equipped with built-in USB 1.1 or 2.0 ports. The ScanGear CS v7.1.3.3 Scanner Driver is for the CanoScan LiDE 50 scanner running on Mac OS 9.0 or higher and Mac OS X "Classic Mode". This self-mounting scanner driver installer assists the user with a guided installation procedure through an intuitive interface.