If you buy a USB flash drive at a certain treasure or a certain duo, and find that the USB flash drive with a large capacity, such as 128G, is damaged and cannot be opened after storing few things, you should use ChipGenius software to check whether the USB flash drive you bought is an expansion disk! Data is priceless. It's shameful to sell expansion disks! There are quite a few unscrupulous sellers who can't use 1G cores