Hi,

I have a house where there is no Wi-Fi between two parts of the house. Almost like two buildings. 
I have 1 master M5 at the cable outlet from ISP covering one area, and wired connection to M5 number two. And two more with only Wi-Fi connection. 
 

Will this work? I can not get it to work. 
connecting #2 next to master with cable is OK. 
move it to the other room, connect cable and power, no connection. 
No cable error. Tested.