Note: Flash memory vendors are using decimal arithmetic: 1MB = 1000KB, 1G = 1000MB calculated, the operating system using binary arithmetic: 1MB = 1024KB, 1GB = 1024MBSo there are some differences between display capacity and nominal capacity of flash memory product. This is calculation difference between manufacturer and our PC. If you have any questions about the usb flash drive, please email to us and we will reply to you as soon as possible.