Just wondering if this is possible, and if there's any impact. As we know, port 4 is reserved for the IPTV module because it has some VLAN thingy hardcoded into the router. My router is upstairs, so I pulled a 20m cable down to the livingroom where the TV is. I wonder if I can stick this cable into a 5-port switch, so the IPTV gets connected to the switch and I have 3 more ports for general use (e.g. perhaps install a second wifi station for better signal quality downstairs).