Very good product, very fast (about those announced). 16GB announced 14.9 available but it's like all the cards so it's normal. Unfortunately there is no possibility of verifying authenticity as Kingston, but hey I think this is a genuine card, we will see with time if it holds! Otherwise, for that price it's a bargain, drive classic Generic Usb basic works perfectly, the Lexar card is really a high speed, to better enjoy the high speed it would buy a branded USB drive.