Portable USB powered MIDI Controller with LCD Backlight Display. Features 16 trigger pads with velocity 1x MIDI OUT / 1x MIDI IN, USB 2.0 supported. 5 Assignable Dials, 8 Assignable Slider, Each slider can be edit by user, 26 Assignable Buttons, Function buttons, providing functions like, Edit, Global, Levels, Preset, Pad Group, and etc. Compatible with Win XP/Vista/Win7 and Mac OSX. Drive free and hot-plug supported. 1. MIDI inputs: 5-pin DIN x1 2. MIDI outputs: 5-pin DIN x1. 3. USB: Slave connector x1(MIDI over USB) 4. DC IN: 6V DC, 1A