Novation Launchkey 25 USB Keyboard Controller for Ableton Live, 25-Note MK2 Version MK2 version of Novation's 25-note USB keyboard controller for Ableton Live 16 velocity-sensitive RGB pads, 8 knobs, and dedicated navigation and control buttons Software for Mac and PC Fully USB bus-powered and class compliant; works without drivers or power cable Software for Mac and PC, Including: Ableton Live Lite, XLN Audio Addictive Keys, Novation Bass Station and V Station virtual instruments; 2-year limited warranty on manufacturing defects