@PCV For Deco M5, check the following TP-Link FAQ: How to select a preferred signal source on the Deco App

@Heymarcoh From the screenshot you provided it appears your Office Deco is connected by Ethernet cable. Is it not so? When Satellite Deco connected by Ethernet cable, it won't report signal source...

@DrillNBass Also, if you are considering buying Deco X50, it makes sense to add it as a Satellite and after that promote it to Main Deco. By doing that, you'll preserve all current Deco mesh...

@DrillNBass Yes, you can do that.

@DrillNBass Deco mesh runs its own WiFi network that is only compatible with Deco units. If your new router WiFi6 is Deco unit, it'll run together with Deco M4. For example, if you buy single Deco...

@PedroLourenco If you have M4 with hardware V4, there is beta firmware which will let you do that: https://community.tp-link.com/en/home/forum/topic/581554 If it is really hardware V3 as you listed,...