Flash drive capacity prompt: Inconsistent units of measurement lead to data inequality (differences between decimal and binary) The manufacturer of a USB flash drive refers to the international standard unit ofmeasurement (decimal) used to represent the storage capacity of the USB flash driveThat is 1 GB=1000 MB. But in the world of computers, data storage is represented in binary, 1GB=1024MBThe second reason is file system occupancy: USB drives need to be formatted and have afile system established (such as FAT32, exFAT, etc. ) before they can be used. The file system itself (such as the main boot record, file allocation table, etc. ) will occupy a small amount of storage space. Therefore, there are some differences between the display capacity and nominal capacity of flash memory products:
Reference: 16GB=approximately 14.6GB 32GB=approximately 29GB64GB=approximately 58GB128GB=approximately 117GB