Thank you for viewing. The CASIO WU-BT10 is a wireless MIDI & audio adapter. This item is new, but has been opened. It was given as a bonus when I purchased a Casio electronic piano. I opened it and tried plugging it into the piano, but then I found out it couldn't be used with a PC, so I ended up not using it and putting it away. Since it has never been connected and used, its operation has not been confirmed. I hope someone can use it.