Both the 3-LNB and the 5-lnb dishes have multiswitches built-in and have four coax connections. This allows you to connect four tuners. To go above four you need a cascadable multiswitch - for example a 4x8 (or 5x8) for the 3-lnb dish, connect all four inputs to the multiswitch and then you will have 8 outputs. The new 5-lnb dish needs a new type of additional multiswitch to go above four connections - the only one I have seen is a 6x8. Again, the four cables from the dish connect to the multiswitch. The two additional input ports are for people with additional dishes pointed to the 72.5 (some locals) and 95 (international programming) satellites