The USB Midi cable latest version with a built-in driver. USB powered and class compliant for true plug & play. All that is needed is to connect to a computer USB socket for automatic installation of the driver. 1 in + 1 out MIDI input channels & 16 MIDI output channels. LEDs indicate power on, MIDI out signal. Supports: Windows XP / VISTA and MAC OS X operating systems. Retail Blister packaging. RoHS & CE compliant.