Welcome! Caveat emptor wrt buying a receiver on line. Before you bid on a unit, get the seller to provide you with the "R" and "S" numbers for that particular unit then call E* to make sure that that unit is "free and clear". Otherwise they may refuse to activate it for you, or you could be on the hook for anything unpaid on the account with which it was once associated. Depending on what other equipment you have installed you might also need a switch or to change the LNB in order to have 3 tuners connected...