Indeed, that is the kit I have. And thank you! That gives me the confidence boost I need to purchase another kit and thank you for clarifying the opportunity that I can use one wired adaptor with the other three modules.

I was, in fact, wondering if I had to I would split an ethernet and set up two of these near the router area but it sounds like I can use them somewhat interchangeably. 

Ok very cool. TP-Link devices are earning my respect. A little tricky to set up at first for a noobe like me but these things work really well!