Does the 500 dish have a DPP (Dish Pro Plus) LNB? If yes, 1 cable needed from dish to receiver. If No then you will need two cables from Dish to receiver. Superdish will work too but you need a DPP 33 switch in order to run 1 cable from dish to receiver other wise if you have a dp34 switch for the superdish then you need to run two cables again.