I have 3 DirecTV DVRs HR 21, HR 23 and the new HR 24 with built-in DECA. I have an SWM 4X8 multi-switch so I have 8 inputs I can use. Some of those inputs have 2 dedicated ones going to the HR DVR receivers for duel-tuning. The questions I have which I can't not get answered are: 1. Do I need DECA adapters for the others or is it even necessary since ALL of mine are connected via CAT6 Ethernet? I was told that many people don't have hard wired connections to every receiver they own so that is why they came up with DECA over coax cable. HOWEVER, if ALL of your equipment is connected via Ethernet, then you don't need DECA at all. Is that correct? I can't imagine why I would have to pay for those silly DECA connectors if ALL my equipment is already networked. 2. If for some reason DECA is required, maybe for copyright issues or something, is it required for my other two receivers without DECA? I thought all you needed was one like the HR 24 and it handled anything connected to Ethernet. 3. If DECA is required do I need one for EACH tuner if I am running duel-tuners on each DVR receiver? Thanks for any input, totally lost on this whole thing. I simply don't understand why it's not like DISH or Tivo and all of it is simply done over Ethernet PERIOD.