Just swapped out my 6 x 8 switch with a SWM8 switch, have 4 RG6 lines coming from dish, plus 1 RG6 from the 95* orbit slot. Using a 1 x 4 splitter connecting 1 H20-600, 1 H21-200, 1 H20-100, 1 HR21-100(DVR) and a R15. I installed the HR21-100, the H20-100 and R15 with no problems...