DOIO KB16-01 Operation confirmed. I bought this with interest, but it didn't quite fit my needs, so I'm using something else. Therefore, it's a beautiful item with almost no scratches or stains. Please check the photos for the other conditions. You can buy it immediately, so feel free to purchase it. Connection type: Wired Key switch: Mechanical It's in good condition, but it's a used item that has been handled by someone and used once. There may be some minor scratches or stains that I don't mind. If you have any questions, please ask before purchasing to clear them up. The packaging will be simple.