Thank you for viewing. This is the M-Audio OXYGEN PRO61. It was opened for photography, but it is new and has not been connected to a PC. Below are the specifications (from the manufacturer's HP): Number of Keys: 61 Connectivity Technology: USB Features: Auto-mapping, Practice, Software Included, Beatmaking, DAW, DTM Product Dimensions: 26.4 depth x 96.5 width x 8.4 height cm Product Weight: 4.8 kg Basic Performance as a MIDI Keyboard: 61-key semi-weighted keyboard with velocity/aftertouch, assignable to virtual instruments/virtual synth plugins. Beatmaking: Equipped with 16 RGB backlit, velocity-sensitive/assignable pads with Note Repeat function, which can be used for beatmaking, clip launching, and soundboard triggering. Native Kontrol Standard (NKS) Integration: Through a partnership between M-Audio and Native Instruments, NKS support has been introduced to the Oxygen series. You can experience "Kontrol" directly from the Oxygen keyboard. Choose Your Favorite NKS Bundle: Browse and control Native Instruments presets and sound libraries. You can choose from three carefully selected bundles of Komplete 15 Select: "Beats," "Band," and "Electronic." Flexible Control: Equipped with 8 assignable knobs/buttons that can control virtual instruments, effect plugins, and DAW parameters. All the Tools You Need Are Here: Automatic mapping of DAW and plugin parameters is possible. Built-in Smart Chord & Smart Scale modes. Features an arpeggiator, pitch bend & modulation wheels, a sustain pedal terminal, and a 5-pin MIDI output terminal. Includes Music Production Software (Guide): Software production package including MPC Beats, Ableton Live Lite, Mini Grand, Velvet, Hybrid 3, and Touch Loops.