I inherited a 1.8 Ghz PowerPC G5, OS X 10.4.11 that seems to work in fine except that all of the USB ports dont work. They show up under System Profiler>About this Mac>More Info. The firewire ports seem to work. Has anyone else had this problem? Im currently using a borrowed Bluetooth Keyboard and Mouse with it so the Bluetooth works. Is there any built in Tiger or 3rd party utility I can use to test or fix these USB ports? Thanks for any help you can provide.