Beware of the driver

Once I have the little brother with 32GB for a while and am very happy I ordered the 64GB variant.
Problem on the stick is that he probably used an extra controller or the like. On my desktop computer it is not recognized (neither as a removable disk or as hard disk) despite Windows 8.1, USB 3.0 port, current drivers, etc. On laptop with Win 8 he was recognized, however, as a hard disk. On Macbook time being not to see. On your desktop, point 2, he was immediately recognized as a removable disk. This is not optimal, if it's a gamble whether the drive is detected. Back at the computer number 1, I then looked with partitioning software, the drive is recognized but is not displayed by the Explorer. After I had the stick then formatted by software we went well, at least on the top genannzen systems. A few days later in the office, he was not recognized on another computer again. As has been said, I suspect that because of the size an extra controller has been installed and is not just recognized for 100% everywhere. Who is doing some research find some postings here.
I've gotten the big stick for backup on my computer and the smaller 32GB in your pocket because it is recognized everywhere.
Otherwise, the drive is very fast, the problem with the sliding mechanism, I can confirm neither with my 32GB more with the new 64GB drive. Only the compatibility and the absence of any indication gives me a point deduction.