HQRP USB IN-OUT MIDI Interface Cable Converter PC to Music Keyboard Adapter Cord for YAMAHA PSR-225GM 61 Key Educational Keyboard plus HQRP UV Meter HQRP&reg; USC to MIDI Cable plus HQRP&reg; UV Meter; 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;