So yes, as previous reviews this key works well on a USB 3.0 but not at all to the expected flow rates. Regardless of the socket (USB 2 or 3) is capped at 20MB / s write and read a little more. FYI, USB keys 2.0 "standard" rather today turning around 35-40Mo d / s ...
So certainly for the price was a lot of storage, but beware if it is expected to have good rates.