Hello, I'm using an x20-4G to a wired network with great success. Yesterday I purchased 3x X50 units and have extended my WiFi all around the property also with success.

I would like to get more Deco units and switch out what I have running in my workplace just to simplify things. 
My questions are how many Deco devices can one connect together and is one able to mix wired and non-wired devices together to extend the same WiFi network?