WD SmartWare Pro expends the current features provided by WD SmartWare. It allows for most non-WD SmartWare USB hard drives (Even if not Western Digital) to become available for backups with WD SmartWare, and it also allows access to and from your Dropbox account for automatic cloud backups.
The difference between the Standard and Premium Pro upgrade is the number of installation licenses, not the actual features of the application.
