Hello, I am wondering if this will work and hoping someone can provide some advice. I have the current generation of Airport Extreme and have a 1TB External HD attached to it that stores all my media files. I use another 500 gb external drive (not compatible with airport extreme) that I plug in directly to my MacBook Pro for Time Machine. This setup sucks!! Sometimes I go way to long before backing up. Here is what I would like to do. Plug another external drive via USB hub and have two drives running from the airport extreme. My question is can I back up the other external HD in addition to the MacBook Pro?