Initial Notice after purchase: Works perfectly, the key does not seem to me absolutely slow! I'm not the type to timing the performance, I'm not for a handful of seconds near ... The appearance by doing enough against "cheap", the key is very light, the plastic is rather "low end," but again it works perfectly, it was worth the money! Edit the 12/16/2014: CAUTION: After 3 months of using the key no longer works! I access my files but soon after it becomes unreadable and appear "empty". Tested on multiple computers and it's the same problem every time. I contacted the seller who propose to me to exchange it if I return my own, but I'm afraid that the same thing happens to me, and I need a reliable USB drive for my files, on which I can count without doubt. I am very disappointed with this purchase ...