I have one of these. And for some reason it gets rather hot when just sitting there in my laptop usb port.
I can understand it getting hot when you are reading or writing it, but it gets hot even when idly sitting in the port. That smells of bad power management.
It even gets so hot that I don’t really dare to leave it in.
Which brings me to the second nitpick I have with these tiny usb drives: they’re just too small. I keep losing them.