Professional videographers and photographers use several digital devices. How To Use My Passport For Mac Backup Windows 10.How To Use My Passport For Mac Backup Password.Performing a backup from a Windows computer: Plug in a USB cable to the WD My Passport drive and connect the other end to your computer. The WD My Passport drive allows you to back and saves your files.Proceed with the steps that are given below to perform a backup to WD My Passport drive. To get remote assistance to backup Mac to Wd passport, click. All the backup files will be saved to your WD drive. Time Machine can perform an hourly backup or for the past 24 hours. Now, all the files will be automatically saved to your external drive. Click the Use Backup Disk button to back up all the files on your Mac device automatically.