This is a used item, so there are some scratches overall. I have confirmed that it works, and it can be used without any problems. Product description from the manufacturer: Supports USB 3.0, achieving a transfer speed 10 times faster than USB 2.0, at 5 Gbps (theoretical value)! A 4-port USB hub equipped with individual switches and individual access lamps. https://www.elecom.co.jp/products/U3H-S418BBKEC.html