MIDI Keyboard Some rubber feet are missing. The following operations have been confirmed: - Power on via USB bus power - Input from all keys confirmed in DAW - Hord function confirmed I haven't noticed any particular problems. I haven't tested all functions, so there may be parts that I haven't checked. Please refrain from purchasing if you are concerned. It has been some time since the purchase, and unexpected problems may occur. Also, since this is a used item, please understand that it is NCNR (No Claims, No Returns). No complaints, no returns.