Several weeks ago I succesfully upgraded my system for MRV. It's been working flawlessly. I have a SWM3 LNB. 3 HDDVRs (none of them have built in Deca). Running a DECA on each one and a power inserter on the system. Upgrading to Directv Cinema. Purchased a Broadband Deca on Ebay...came with the power supply. My question is, does the power supply act as a power inserter for this deca, or do I need the power supply AND a power inserter at the BB Deca?