Which port on the router is for fiber optic

Fiber optic cables connect to an Optical Network Terminal (ONT), and the ONT then connects to your router via the WAN port.How Fiber Connects to Your Router

Fiber optic internet does not plug directly into a standard home router because the signal is optical, not electrical. Instead, your Internet Service Provider (ISP) installs an Optical Network Terminal (ONT), which converts the light signals from the fiber into electrical signals that your router can use . The fiber cable from the ISP connects to the optical port on the ONT, often labeled or color-coded for easy identification . Once the ONT converts the signal, it provides an Ethernet output port. You then use a high-quality Ethernet cable (Cat 6 or Cat 6a recommended) to connect this port to the WAN (Wide Area Network) port on your router . The WAN port is usually labeled “WAN,” “Internet,” or sometimes “ONT/Fiber” and is often colored differently from the LAN ports to distinguish it .

Additional Considerations

• Router compatibility: To fully utilize fiber speeds, ensure your router is “fiber-ready” or supports high-speed connections, typically at least 1 Gbps, and modern Wi-Fi standards like Wi-Fi 5 (802.11ac) or Wi-Fi 6 (802.11ax), .
• Placement: Both the ONT and router should be near power outlets and in a dry, ventilated area to maintain stable performance .
• Direct fiber routers: Some specialized routers have an SFP port that can accept fiber directly, but most home setups still require an ONT as an intermediary . In summary, the fiber optic cable connects to the ONT, and the router's WAN port is the interface that receives the converted signal for your home network .