Novation 25 SL MkII USB Midi Controller Keyboard 25 Keys High quality professional keyboard Illuminated controls provide instant visual feedback. Sustain pedal 0.25 inch jack socket Giant 144-character LCD screen. 8 soft trigger pads. Expression pedal 0.25 inch jack socket Huge array of touch-sensitive controls and includes Automap 4 PRO Control Software Compatible best with Windows 7,8,10 & Mac OS X 10.8,10.9,10.10