I have the 64GB version. Bought to watch series and movies on TV. The first one was successful, the speed was quite suitable, especially for 500. I took the second one, but it turned out to be much worse. I found out that they are on different memory chips, although the controller is the same (Phison PS2309). If you got caught on memory chips from Toshiba you are lucky, if you are not from SanDisk. A few tests on the photo, I signed where which chips are. Tested via USB 3.1 connector
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