ammoon Worlde Panda mini Portable Mini 25-Key USB Keyboard and Drum Pad MIDI Controller 25 velocity-sensitive keys. 4 MIDI control groups. 4 banks for different settings. (4 assignable control knobs plus 4 assignable control sliders) 8 backlit trigger pads. 8 control buttons: CC Mod, Mod, Bank, Prog, Pitch down / Pitch up, Octave down / Octave up. Plug and Play USB 2.0 cable, no need of driver installation. USB bus powered - no additional power cable needed.