Apparently it happens so with every manufacturer that so-called "Monday device" are doing. So I need my speakers a little bit contradictory. But what I really like about this stick is the speed. Well, also here you can at such a price does not expect the world, but you can have a try to be satisfied with less. I measured with CrystalDiskMark. An USB 3.0 the drive is reading at 127.7 MB / s and write 20.85 MB / s. An USB2.0 there are still reading at 36.07 MB / s and writing 14,11 MB / s. So what you want there to say. I myself also still have a SanDisk Cruzer Blade who just turned on ~ 4 MB / s Writing (USB2.0) comes.
So I can only recommend buying and If ever stick is defective, then Amazon is but eh super accommodating.