Directv did an install for a friend and used one wire from the swm lnb to a 1x8 splitter and then 4 lines to her 4 HR21 dvr's. Is it possible to expand this to yet another dvr? Either by splitting that one line from the dish to a second swm? Doesn't seem possible from everything I've read here. I'm assuming that lnb would have to be changed to the non swm lnb which I could then take the 4 lines to a 6x8 multiswitch(giving me access to more tuners) and then on to a swm? I have an extra multiswitch and swm laying around and all I'd need is the lnb and run a couple more wires (easier said than done) if that's the case. That's the configuration I have at my house. She's in a rental house so options were limited using the existing wiring,otherwise I'd of had them install a nonswm lnb. It was a movers installation as well. I guess a lot of people could use the swm16,hope they release it soon.