MIDI Sub Controller for SeratoTM Scratch Live Simple USB Plug & Play Connection (USB MIDI / Bus power) Dedicated Tactile Controls to Replace Computer Keyboard Shortcuts High Quality Steel Cabinet with Rugged Rubber Keys Serato Approved USB Controller File Select Knob & buttons w/Back-Forward Action Keys Track Select and Fast Search Buttons SHIFT/CLR Button 5 Cue Point and 3 Sampler Player