@Martyns20 You can keep ISP modem in router mode with its WiFi turned off (and/or its SSID different from Deco's WiFi), and configure Deco mesh to run in Access Point mode: Switching a Deco to Access...

AJ_box wrote I'm pretty happy with the coverage provided by my M4 system but I want to move one of my satellite Decos to a slightly less obvious location. To do this I need a longer power adapter...

Marios_X wrote @Alexandre. In future scenario the decos will be at access point mode? Rooms will have the option to print on network printer? I don't think it is a good idea to put the main deco...

@moorsider Single Deco P9 will not connect with the rest of M5 Deco mesh over powerline. P9 will not connect to TP-Link AV1000, too. There is another option, which you can actually test before buying...

@Spike666 This is how it should look when 5GHz band is operational on Satellite Deco:

@rhbmcse This is a good idea to place additional unit in the middle. I would recommend going with same model of Deco, which is X50. In case you need to wall or ceiling mount new Deco unit, consider...