Feature●61 full size sensitive keys. Eight fully assignable 40 mm sliders. Eight fully programmable knobs. Four trigger pads. Six transport controls. Pitch bend wheel. Modulation wheel●The supplied USB MIDI out and keyboard MIDI out Can connect to other MIDI device by oneself. Sustain pedal interface (sustain pedal does not include). power supply: USB power●Attachment: Owners manual, USB cableDescription Usb midi-keyboard with 61 velocity sensitive keys. 4 trigger-pads, 6 buttons for transport control, 8 rotary encoder, 8 slider 40 mm, pitch-bend/modulation wheel, 8 different velocity curves. Usb bus powered, connections: USB, MIDI out, for Windows XP/Vista/7/8/10 and Mac OSX, several velocity curves for choosing.