Thank you for viewing. This is a LEMIX MIDI interface for older Macs, connecting via the serial port (Mini-DIN 8-pin). I don't have any equipment to connect it to at the moment, so its current functionality is unconfirmed. However, it worked without issue at the time. The unit itself is included only. Please ask if you have any questions. Please purchase with the understanding and acceptance of the above. Please understand that this is a personal assessment and inspection. Please refrain from purchasing if you are overly concerned about details.