I received one and after I had copied a few files (word docs etc.) on to it, it froze my new PC and when it finally started responding again, the pen drive wouldn't open. Tried it a few times to no avail. Contacted PCS and then sent me a new one pretty fast but the same thing happened again. Contacted them again via email and posted in a thread on here (where I posted the first time and got my replacement) but they never replied and still haven't. So I've got a broken pen drive here. Don't know why I haven't thrown it away yet lol.