You need the actual dpp44 switch. See, the dpp44 is 'so' advanced that it needs to be powered by more than just the power than a receiver can provide. Normally, a receiver can send digital signals to the switch to (naturally) switch the satellite feeds. Anyway, a dpp44 needs extra power and extra equipment, mainly a power supply (aka a transformer) and a way to get that power all the way outside to the switch. The power inserter adds that power to the segment of the cable that leads to the switch; a second segment runs just a few feet from the inserter to receiver. One power inserter and supply will run the entire switch meaning whatever other receivers you have installed do not change or add any of this stuff. You unfortunately only have two of three pieces.