Which port is the fiber optic cable in the router

A fiber optic cable connects to an Optical Network Terminal (ONT), which then links to your router via the WAN port.How the Connection WorksFiber optic internet uses light signals that standard routers cannot directly interpret. Therefore, the fiber cable from your ISP first connects to an ONT, a device that converts optical signals into electrical signals compatible with Ethernet networking . The ONT is usually installed near the point where the fiber enters your home, often on a wall or in a closet .Connecting to the RouterFiber to ONT: Plug the fiber optic cable into the ONT's designated optical port. Handle the connector carefully, removing any protective caps and aligning the connector properly until it clicks into place .ONT to Router: Use a standard Ethernet cable to connect the ONT's Ethernet or LAN port to the WAN (Internet) port on your router. The WAN port is typically labeled “WAN,” “Internet,” or sometimes color-coded to distinguish it from LAN ports .Power and Configuration: Power on both the ONT and the router. Access the router's admin panel to enter any ISP credentials if required and ensure the connection is active .Key PointsThe fiber cable does not plug directly into a standard router; the ONT is required for signal conversion .Some fiber-ready routers have SFP or dedicated fiber ports, but in most residential setups, the ONT-to-router Ethernet connection is standard .Always handle fiber connectors carefully to avoid damage or signal loss . By following this setup, your router receives the internet feed via its WAN port, allowing you to distribute the connection to devices through Wi-Fi or Ethernet.