For a while I was thrilled properly. Writing and reading of around 80 MB / sec is already a word. So fast was not a USB stick with me. It was noticeable at the beginning that was very warm in the USB 3.0 mode the stick. When connected to USB 2.0, this was not observed. Half a year I had a lot of joy, came up at a time when writing it to an error message. First, only the newly written list was no longer legible, shortly thereafter the whole stick. He settled then no longer format, not even to other USB ports or computers. I have therefore refrained from buying me the stick again and I will look elsewhere. Properly handsome he looked already made in its glossy cover, even if the edges were a bit edgy arg. With the cap I had no problems, that has always locked in place.
Guess that the heat was ultimately responsible for the electrical Exitus.