Whether you're running Windows XP, Windows 7, Windows 8.1, or Windows 10, the steps are essentially the same.
- Plug in the USB drive.
- Open Windows File Explorer and go to This PC (aka Computer or My Computer).
- Right-click the drive, and select Format...
- Under File system, choose exFAT.
To format your drive, you simply make your selection, click Start, followed by OK to confirm that you really want to erase all data and the drive will be formatted.