I know that I can backup from an external drive to dropbox. Can I also set it up to save folders already in my dropbox back to the hard drive? I am not sure where to find better directions on how this would work or exactly what the protected checkbox does and does not do.
Sync Dropbox to External Drive
For now, it is possible to save folders from your Dropbox account to an external drive but only if they are located in the Boxifier folder in your Dropbox account.
The next major version of Boxifier will remove this limitation.