I'm selling this because I used it in my non-smoking home but haven't used it much. Operation has been confirmed. It comes with the original box and USB cable, but the box is torn and has been repaired with tape. It's compact and convenient, usable not only as a drum pad and keyboard in conjunction with a DAW, but also as a control surface. Product Description: A popular and standard MIDI keyboard controller for DTM (Desktop Music). In addition to 25 keys, it is equipped with various functions such as PITCH and MOD, making it a very practical MIDI keyboard. It's lightweight and compact, so you can easily carry it around.