For some reason I can't see the first set of pictures. And I can kind of see what you are talking about from the thumbnail. So, yes, that would work. The box just sees the Ethernet and should connect to the network that way. Actually if it was configurable to actually change the default password on the AC adapter Homeplug (the 722 doesn't allow it, making that connection unsecured) then I can just use the AC adapter and not sure my wall plug. The problem is that somehow even through the surge protector the 722 can see a trickle of data from a Homeplug connected to my router. So I used another wall plug instead and change the passwords on the wall plugs so the 722 doesn't get a connection through its plug and defaults back to the ethernet.