Alesis V25 MKII 25 Key USB MIDI Keyboard Controller V25 MK2 *2021 LATEST MODEL* Features -25 full-sized, velocity-sensitive, synth action keys -Lightweight design for easy setup and portability -8 velocity-sensitive LED backlit pads with full level and note repeat controls -Arpeggiator with 6 modes, tap tempo, time division and swing controls -4 MIDI-assignable knobs for virtual instrument and DAW control -Pitch-bend and modulation wheels for added expression -Octave buttons enable access to full piano range -1/4" TS sustain pedal input for connecting an external sustain pedal [NOT INCLUDED] -USB power and USB-MIDI connectivity for Mac and PC Contents -V25 MKII USB-MIDI Controller -USB Cable -Software Download Card -User Guide Minimum System Requirements: Standard USB 2.0 port Windows: 8 (x64) MacOS: 10.13.6