@9ux It is a bit hard to say from that picture if this is coaxial cable, because it is inside the panel. This is more traditional look: Take off the panel if you can and take a look. Also, all these...

@9ux If you have coaxial cables, you can bring Ethernet to every room where that cable terminates. Then, you can connect "standard" Deco units to the Ethernet and they will run on Ethernet backhaul....

@poyntzj I run my Deco mesh in AP mode. I have three Deco units hardwired. Here is simplified network diagram of what I have: There is also Satellite Deco on WiFi backhaul, not on that diagram. It...

@9ux Have you bought Deco already? If not yet, I can have conversation with you to find better options from TP-Link Deco for your environment. For example, BE85 is quite expensive model which will...

@Rodorom The best way would be to use what you already have. TP-Link AC3150 router is not WiFi mesh compatible with Deco mesh, but it can be used together with Deco to achieve what you want. Here is...

@LuisVS Because you have router (Main Router), you can configure Deco mesh to run in Access Point mode: Switching a Deco to Access Point (AP) Mode This will eliminate all Deco mesh bandwidth...