USB and ADB
Kensington Turbo Mouse, Model 64210. With an ADB and USB interface, it can be use on virtually any Mac! Colored to match the iMac G3 or Power Mac G4, it is gray with a blue ball. There is some wear showing, and it has been opened - likely for cleaning, but not by me. I am using it as plug and play on an iMac running OS 10.9 at the moment, and would be happy to test it with any OS.