A:AnswerOne adapter that plugs in near router. One adapter for the room that needs boosted signal. Additional units can be added that can piggyback from primary adapter
A:AnswerYes this would be compatible, but I think you would not get the 1200 mbps speed reputed this has (I doubt anyone will). Max speed should be 500 mbps for all your units (Nano and 1200 mbps).