Trying to help the In-Laws with their setup by adding a pair of P9 units to an M5 trio. Property is far from ideal, with the internet connection basically being at one end. Current setup was: Router >

I recently added two P9s to my setup, reconfiguring the whole configuring a new network rather than adding them to the previous version. A P9 is the main deco to enable powerline backhaul to a problem