@Jlondon75 It should be fine to add one or two Deco units to 3-unit Deco mesh. There should be no adverse effects. For additional units I would recommend X20, or X50/X55. If you are adding X50 or...

topgazza2 wrote @David-TP I was considering a Deco M5 or similar. Something simple @topgazza2 Consider M5 if you are OK with WiFi5 Deco unit, or X55/X50 for WiFi6. With your setup, you may need...

JohnPTB wrote What would be the best way to wire it if in Wireless Router mode? 2nd Mesh into switch or direct into main mesh? @JohnPTB The best way would be direct into main mesh (into Main Deco)....

@Infryndiira Sorry, can't give you solution when it is an unmanaged switch. Your case might be similar to this one, but it also does not have solution. For testing purposes exclude switch from your...

@Antares173 I frequent this forum and noticed elevated number of complains for XE75 specifically. It might be that XE75 is an unlucky Deco model. I would recommend different Deco model: Deco X90 or...

@cleim33 It does make sense. Also, while adding X50 to your mesh, Deco app may recommend making X50 new Main Deco. If not, the process of promoting new Deco unit to Main Deco described here:...