What is the real capacity?
Flash memory vendors are using decimal arithmetic:1MB = 1000KB,1G = 1000MB
calculated, the operating system using binary arithmetic:1MB = 1024KB,1GB = 1024MB;
so there are some differences between display capacity and nominal capacity of flash memory product.
4GB = approximately 3.6GB-3.8GB
8GB = approximately 7.4GB-7.6GB
16GB=approximately 14GB-15GB32GB=approximately 28GB-30GB64GB=approximately 58GB-60GB128GB=approximately 115GB-119GB256GB=approximately 230GB-238GB