Purchased 5 years ago and used a few times. I haven't used it since, and am now putting it up for sale. Operation has been confirmed. This is a 2-input USB audio interface that delivers professional sound quality. - Model: UR22 mkII - Connectors: USB, MIDI, XLR, LINE OUT - Power: USB bus-powered - Controls: Volume knob, zero-latency monitoring - Inputs: 2 inputs (XLR/TRS combo) Thank you for looking.