Right hand USB board for 1.5GHz (BlueTooth 2) & 1.67GHz (1280x854 screen) models of the 15" Aluminium PowerBook G4. This part will not fit the BlueTooth 1.1 version of the 1.5GHz PowerBook or the dual layer Superdrive (1440x960 screen) version of the 1.67GHz PowerBook. This board connects to the logic board via the right usb flex cable.