Upgrading my wireless network from 2.4ghz single band wireless n to a dual band Wireless N setup and I'm looking for a USB adapter for upgrading my laptop to dual band. I would like the adapter to be rather small & compact so I can just leave it plugged in and work on both the 2.4 & 5ghz networks as some of the adapters I've been looking at were 802.11AC adapters that don't seem to support 5ghz 802.11N, only 2.4. Does anybody have any suggestions for a USB adapter that might be suitable?