I was in Best Buy today and they had two different Pogoplugs - First the Pogo P-21 for $99.00 (In a White Box) and then the PogoPlug Pro for $49.00 (In a Black Box) - After carefully reading all the specs on both boxes and opening both products (They are pretty much the same), I wasn't able to tell what were the differences - I guess they are software driven, or perhaps that the PogoPlug Pro has wifi capabilities - Can someone please explain the difference between the two (if any...)