I have a HR44 and two minis in my home. If you look at the way the cabling is run it comes in from the dish and goes into the "Power to SWM" port on the power inserter and then the other cable port on the inserter goes out to a 4 way splitter. From there, three cables go out to the HR44 and the two minis in the system. This is the way the DirecTV tech wired it. Everything works fine. Now, I am considering using my receivers in my RV. Would I wire the RV the same as the house? I mean why not? I would use the HR44 for the living room TV and one mini for the bedroom TV using a power inverter and a splitter same as the house is wired. So why when I google "wiring diagrams for DirecTV" am I seeing a "DirecTV 8 Channel SWM" device? Why is this showing up and what is it for? I can't see where I would need it.