If one end of the RJ45 ethernet cable is connected to the WAN port on the router, where is the other end connected to when setting up a WAN using a router? -
Amazon.com: Dual Wan Router
Amazon.com: TP-Link Powerline Wi-Fi Extender (TL-WPA7617KIT) - AV1000 Powerline Ethernet Adapter with AC1200 Dual Band Wi-Fi, Gigabit Port, Passthrough, OneMesh, Ethernet Over Power, Plug & Play : Everything Else