I have two external hard drives that I use for back up. If I get a new desktop, can I connect those to the new PC without any problems developing? Can I just plug them in, copy the files to the new PC hard drive, and then will the externals continue to back up new files created on the new PC? What do I have to do to make that happen? If I plug in the external hard drives, will they load up correctly? One is a Passport (1.5TB) and one is a My Book (2TB).