PC Setup 1.5 is supported on System 7.1.2 or System 7.5.3 (with either System 7.5 Update 2.0, or pre-installed System 7.5.3). Other versions of the Mac OS may cause unpredictable results.
Note: System 7.1.2 is only supported on the Power Macintosh 6100 DOS Compatible. System 7.5.3 can be installed on any Macintosh that supports a DOS Compatibility Card.