Roland PCR-300 32-key MIDI keyboard. There were no particular problems when it was last used. I haven't used it for a while due to a change in environment. I've confirmed that it powers on via USB, and the knobs, sliders, and keys all respond. I haven't done a perfect check, so please understand that this is the current condition. Upon receiving the item after purchase, please proceed with the acceptance process as is. I will pack it after purchase. It's large, so please allow some time for shipping.