The displayed capacity is not equal to the nominal capacity. The capacity of storage products when they leave the factory is usually calculated based on 1MB = 1000KB and 1GB = 1000MB, while the operating system uses a binary algorithm: 1GB = 1024MB. Therefore, there is a certain difference between the displayed capacity and the nominal capacity of the product. So the displayed capacity of flash memory products is approximately 90% of the nominal capacity, which is a normal phenomenon. For example, a nominal capacity of 16GB has an actual capacity of approximately 14.4GB; a nominal capacity of 32GB has an actual capacity of approximately 28.8GB; a nominal capacity of 64GB has an actual capacity of approximately 57.6GB, and so on!