FEATURES ������������� 25 full-sized, square-front, semi-weighted keys with aftertouch ������������� 16 velocity-sensitive trigger pads with illuminated RGB feedback for beat production and clip launching ������������� 24 assignable buttons and 8 assignable knobs interface with your music software ������������� Pitch and modulation wheels deliver expressive, creative control ������������� Seamless visual feedback via LED screen and illuminated buttons and knobs ������������� USB MIDI and 5-pin MIDI Out offer flexible MIDI connectivity ������������� USB-powered and plug-and-play support for Mac and PC ������������� Production software included: Ableton Live Lite and Xpand!2 by AIR Music Tech (downloads) CONTENTS ������������� VI25 MIDI Keyboard Controller ������������� USB Cable ������������� Ableton Live Lite (Download) ������������� Xpand!2 by AIR Music Tech (Download) ������������� User Guide ������������� Safety & Warranty Manual REQUIREMENTS ������������� Mac: OS X 10.7, 10.8, or 10.9 (Software Requirements: OS X 10.8 or 10.9) ������������� PC: Windows 7 or Windows 8; Multicore Processor; 2GB RAM ������������� Available USB Port Alesis VI25 Advanced 25-Key USB MIDI Drum Pad and Keyboard Controller Alesis VI25 Advanced 25-Key USB MIDI Pad/Keyboard Controller. Advanced USB Midi Pad/Keyboard Controller. 25 full-sized, square-front, semi-weighted keys with after touch. 16 multi-color RGB backlit pads respond to both velocity and pressure. Designed for hands-on control of your DAW as well as plug-ins and instruments. 8 assignable knobs; 24 assignable buttons. Pitch & Mod wheels deliver expressive, creative control.