I have a Dropbox Professional account (3 TB of storage) and am using about 630 GB of it. I have two desktop computers that both have Dropbox on them. Computer 1 has Dropbox on an internal hard drive, Computer 2 has Dropbox on an external hard drive. The internal drive on Computer 1 has failed. Can I unplug the external drive on Computer 2 and plug it into Computer 1 and tell Dropbox to use the external drive, so I don't have to re-download all of my files? If that could work, could I also just reassign the same drive letter to the external drive as I used for the internal drive and have Dropbox keep working the way it always did?