49-key midi controller keyboard with aftertouch-sensitive semi-weighted keys, assignable zones, 9 faders, 8 knobs/buttons, 16 pads, 5-pin and usb-midi, usb bus power, and included software bundle tech specs number of keys: 49 type of keys: semi-weighted velocity sensitive: yes aftertouch: yes pads: 16xrgb backlit velocity-sensitive pads other controllers: pitch, modulation wheels encoders/pots: 8 faders: 9 dedicated transport control: yes pedal inputs: 1x1/4" (sustain) midi i/o: out/usb usb: 1xtype b comp connectivity: usb software: akai mpc beats, ableton live lite, air music tech virtual instruments format: aax, au, vst h/ware req - mac: intel core 2 duo or higher (intel core i5 for pro tools | first), 4gb ram minimum h/ware req - pc: 64-bit intel core 2 duo / amd multi-core or higher