These are all fake capacity drives. Whatever they tell you about capacity, you can bet it's a lot less. Bought for 256GB. You can plug this thing into a computer and it will tell you it's the right capacity, but fill it up and your files will be corrupted. If you download simple software to try, you will be very disappointed. The software that tests them writes information to the disk, tests it, and looks for errors. Errors are displayed when the recorded information reaches actual capacity. In the case of the 256GB drive, after running 3 different programs, it turned out to only contain around 39GB. Sellers maintain their rating by sending a card with a disc that gives you a second card for free in exchange for a 5-star rating.
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