Identify the USB Flash Drive listed on the left hand side of window, it will usually be listed as Disk 1, but it may be listed as something else depending on how many drives your computer has, or if you have any other drives plugged into your computer.Open program called 'Disk Management', by clicking the Windows Start button, or pressing the Windows Key on the keyboard, and typing the work 'Disk Management' then pressing enter, or by pressing the Windows Key + X, and selecting 'Disk Management' from the list of programs.Insert USB Flash drive into one of the USB ports on your Windows computer.Instructions on how to format a USB Flash Drive into exFAT in Windows: ( Google Drive works well to back up data ) PLEASE BACKUP IMPORTANT DATA ELSEWHERE BEFORE PROCEEDING. **WARNING** THE PROCESS OF FORMATTING A USB DRIVE WILL PERMANENTLY ERASE ALL DATA ON THE ENTIRE USB FLASH DRIVE. In order to copy files to a USB Flash drive on a Mac computer, and then open them on an APU Classroom or Lab computer, (or vice versa) the Flash drive must be formatted in either exFAT or FAT32(MS-DOS FAT). It's important to make sure that your USB Flash drive is configured into a file system format that is usable across multiple computer operating systems.