What with this stick that USB 3.0 is, may know only the manufacturer well. Possibly is even a USB 3.0 interface installed, but that does not interest me if the real speed USB 2.0 does not exceed. But I knew what I was getting myself and therefore there is the 4 star. With h2testw I when: Writing: 15.8 MB / s Writing: 26.1 MB / s measured and this on a USB 3.0 interface, on which I have of course already achieved 150 Mbytes / s.