There only two wires that are needed. First is Ethernet cable to go from the wan port to the cable modem. The other four Ethernet ports on the back are the same. Most routers for first time set up need to be hard wired..plugged into a pc and have the install/set up disk run to set up router ssid (device name that you see broadcasted). And to turn on password so your whole naborhood does not log onto your network.