Where to plug the fiber optic cable into the China Unicom router

To connect a router to China Unicom fiber, you need an ONT to convert the fiber signal, then link it to your router via Ethernet and configure the router with your ISP credentials.Step 1: Gather Necessary EquipmentOptical Network Terminal (ONT): Provided by China Unicom, this device converts the fiber optic signal into an Ethernet signal your router can use .Fiber optic cable: Usually single-mode with SC/APC or SC/UPC connectors .Router: Ensure it supports WAN/Ethernet input; some fiber-ready routers have SFP or PON ports .Ethernet cable: To connect the ONT to the router .Step 2: Connect the Fiber Optic Cable to the ONTLocate the fiber wall outlet where China Unicom's fiber enters your home .Remove protective caps from both the fiber cable and the ONT port.Insert the fiber connector into the ONT's optical port until it clicks securely .Power on the ONT and wait for the status lights to stabilize (usually 2–5 minutes), .Step 3: Connect the ONT to Your RouterUse an Ethernet cable to connect the ONT's LAN/Ethernet port to your router's WAN port .Power on the router and wait for the indicator lights to confirm a successful connection .Step 4: Configure Your China Unicom RouterConnect a computer or mobile device to the router via Wi-Fi or LAN cable .Open a web browser and enter the router's IP address (commonly 192.168.1.1 or 192.168.0.1), .Log in using the default username and password on the router label, or your custom credentials if previously changed .Navigate to the Network or WAN settings. Select the connection type (usually PPPoE for China Unicom) and enter your ISP-provided username and password .Save the settings and restart the router .Step 5: Configure Wi-Fi and SecuritySet your SSID (network name) and Wi-Fi password under the Wireless settings .Choose a secure encryption type (WPA2 or WPA3 recommended).Optionally, update the router firmware and change the default admin password for security .Step 6: Verify Internet ConnectionCheck the router's status lights and test connectivity on a connected device .If the internet does not work, ensure the fiber cable is properly seated in the ONT, the Ethernet cable is connected to the WAN port, and the PPPoE credentials are correct . Following these steps will allow you to successfully connect a router to a China Unicom fiber optic line, ensuring fast and stable internet access.