I have the 3 unit (1 Router, 2 Satellite) system and it works quite well.

However, my old solid house still has some poor signal areas and my wife doessn't want the units in obvious places.

I assume I can add another Satellite unit if I can find one, but there are a couple of router units being offered on eBay.

Is it possible to configure a 2nd router as a satellite unit only via backhaul?

Thanks