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Why the USB flash drive real capacity is not correct capacity?
Flash memory vendors are using decimal arithmetic: 1MB = 1000KB,1G = 1000MB calculated,
the operating system using binary arithmetic: 1MB = 1O24KB,1GB = 1024MB;
so there are some diflferences between display capacily and nominal capacity of flash memory product.
4G is about 3.6G;
8G is about 7.2G;
16G is about 14.4G;
32G is about 28.8G;
64GB is about 57.5G;
128GB is about 117G.