To backup an external hard drive that is over 16GB in automatic, scheduled backups you will need our external drive add-on service which can be purchased from within your control panel.
However, any USB drive under 16GB can be backed up with no further charge, on Windows the external hard drive will show up on the file selection window with the mapped drive letter name name of that drive.
On a Mac simply open the application and click on 'Settings', under the tab 'Backup Selection' Please select 'Manual Backup Selection' and select your files manually - within the folder titled 'VOLUMES' you can view and select files on your USB storage device.
External hard drives need to be connected to your device throughout the backup process.
External drive up to 500GB: 39.95 per year
External drive over 500GB: 79.95 per year
Any file can be dragged and dropped from any size external hard drive onto the app and be backed up. The add-ons mentioned above are only needed to backup external hard drives in automated, scheduled backups.