Feature:1. 25 assignable velocity sensitive keys with excellent performance 8 assignable trigger pads with colorful backlit in working status, comfortable and accurate.2. 4 MIDI control groups: 4 assignable control knobs plus 4 assignable control sliders 4 banks for different settings.3. 8 control buttons: CC Mode, Mod, Bank, Prog, Pitch down, Pitch up, Octave down, Octave up.4. USB 2.0 Plug and Play, no need of driver installation USB bus powered and no additional power cable needed.5. Compatible with for Win11, for Win10, for Win 8, for Win 7, for Win XP, for Win Vista, for OS X and compatible with for CAKEWALK and other mainstream music software.Specification:Specifications:Color: Black and WhiteMaterial: PlasticOperating system: Support for Win11 or Win10 or Win 8 or Win 7 or Win XP or Win Vista or OSX.Item size: 32 x 19 x 3cm or 12.6 x 7.5 x 1.2inItem weight: 745g or 1.6lbs.Package List:1 x MIDI Controller1 x USB CableNote:Not support for Windows 98, Me, NT and 2000.G3 or G4 accelerator cards are not supported.