@Abhi-user234 Take a look at Apple Tech Support article HT213433 with the title "Use Wi-Fi 6E networks with Apple devices." See if scenario described there applies to your Deco mesh configuration.

@Bond0102 Your router configuration is uncommon. Not wrong, but uncommon. Usually, router has 192.168.*.1 LAN IP address. You may have found bug in Deco code, either handling unusual default gateway...

@berne With Deco mesh consisting of M5, you should be able to configure altan Satellite Deco to connect to hall Satellite Deco. See How to select a preferred signal source on the Deco App

@Rolander This should work.

@Rolander Deco X75 and M4 can run together in same Deco mesh. To keep Deco mesh configuration settings, add X75 as Satellite Deco and then promote it to Main Deco. How to Setup the Satellite Deco to...

@vDex Have you tested speeds near Deco P9 that report powerline links: what results you are getting now? Hopefully, better than wireless. As for Cabinet P9, I think with this Deco model its power...