Compact 25-key MIDI keyboard with 8 pads and 8 knobs. - Brand: AKAI - Model Name: MPK mini - Number of Keys: 25 keys - Number of Pads: 8 pads - Number of Knobs: 8 knobs - Connectivity: USB connection - Color: Black Thank you for viewing. I connected it to a computer once for setup, and haven't used it since. It's almost new, but I left it out of the box. I cleaned it carefully. The box has Amazon tape and an Amazon address label on it.