aoeyoo AY03 USB IN-OUT MIDI Cable Converter PC to Music Keyboard Adapter Cord Window Win Vista XP Mac OS Cable length: 2.0m (6 Ft). Latest model with a built-in driver. 16 MIDI input channels and 16 MIDI output channels. LED's indicate power in, MIDI in signal and MIDI out signal. True Plug & Play NO DRIVER INSTALLATION NEEDS