USB MIDI Cable Converter PC to Music Keyboard Window Win Vista XP, Mac OS X Turn your PC into a music studio by connecting a music keyboard to your computer with the USB MIDI c Easy to install with built-in driver; USB powered, no AC adapter needed 1 in + 1 out MIDI interface; 16 MIDI input channels & 16 MIDI output channels LED power indicator; MIDI in & out signal indicator; Supports: Windows Vista/XP and Mac OS X