I have attached a file showing my setup. I have established MOCA in a manner in which I do not believe that a POE filter is necessary to prevent signal propagation. I wonder, though, if a POE would increase the efficiency of the system. If so, I am not certain where it should be placed. I am wondering if it should be after the basement switch and before the MM1000; there would be a splitter with the "input" leg connected to the MM1000, and one "output" leg connected to the switch, and the other "output" leg connected to the POE. Many thanks in advance for your advice.