Thank you for viewing. This is a Sharp "MZ-2200" computer from the 1980s, along with an expansion I/O unit. As the main unit doesn't have a monitor, I have only confirmed that it powers on. I am a novice, so I don't know how to install the expansion I/O unit, and its operation is unconfirmed. Please consider both items as junk. The condition of the boxes is not very good. These items have been stored for a long time and are being sold as they were found in the boxes. Everything in the photos is included. No claims and no returns accepted.