Hello everyone. I bought 2 of these keys. I wanted to copy music to my girlfriend. With key 2 I had the same problem: It copies the directories and when I visualize them, they are empty. I spent two days on forums and I found nothing. I have formatted, re-formatted, and each time the same reasons, the same punishment. I gave up and I returned. one of these keys is out of order, perhaps, but not both !!!! Moral: to avoid. It's a shame because I had a 16 gb which worked very well. Jacques