@14paavang Deco M5 if you can still find it in retail. Also, Deco M9 Plus. Both have Connection Preference feature in release firmware. Both these models are WiFi5, in general expect M9 Plus be more...

@Jamze I have not seen TP-Link stating limit on number of hops, but each hop cuts WiFi speed by about half. Which means, if you start with 400Mbps on Main Deco (for example), Satellite Deco connected...

Andrewdj wrote @Alexandre. i did step 1 and step 2 then how do i change/remove the selection of main deco in the apps? @Andrewdj You now have Deco mesh that should work better than before, Main Deco...

@Fabson One more thing. If your Deco app allows to configure assignment of WAN Port, please do that for X10 Ethernet port which is connected to ISP modem: https://www.tp-link.com/en/support/faq/4252/...

@Fabson I can't think of any ZTE F660 router settings which could cause this. What you have appears to be an issue between Main Deco and switch. Your switch tells you there is no link between switch...

@Fabson With Deco mesh in Router mode you can't swap Deco units (Main and Satellite) also can't connect ISP modem directly to the switch. This will not work regardless of any issue you have on your...