I bought two, large capacity, and cheap. Each key has been used on two different PC: under WIN7 and Vista. Each planted the machines, I have swapped, ditto. When we manage to connect, disconnect the key from the computer, you see the USB device, but they do not appear in Windows Explorer or freecommander. When finally, after several tries (connect-disconnect), you come to transfer to a file, it disappears after a few moments. So capricious keys and 64GB ghost files, no thank you. Also incredibly slowly writing, reading I do not know because the files disappear. Direct return to Amazon without any worries, and very fast refund (thank you).
