The ReMOTE is currently shipped with a driver CD for Windows 98SE, Windows 98Me, Windows 2000, Windows XP and Mac OSX 10.2 or greater. These are all USB MIDI drivers. There is no Mac OS9 ReMOTE USB MIDI driver but the ReMOTE can be used by connecting the conventional MIDI ports on the ReMOTE to an existing MIDI interface connected to the OS9 Mac. The OSX driver for the ReMOTE will work with Jaguar (10.2.4 onwards), Panther and Tiger operating systems.