You can use a 300Mbps router with a fiber optic connection, but your router will cap wireless speeds at 300Mbps even if your fiber plan is faster.

Connecting Fiber Optic Internet to Your Router

To connect fiber internet to a router, you typically need an Optical Network Terminal (ONT) provided by your ISP. The fiber cable from the wall outlet plugs into the ONT, which converts the optical signal into an Ethernet output. You then connect the ONT to your router's WAN port using an Ethernet cable. Once powered on, your router will distribute the internet via Wi-Fi or wired connections .

Router Compatibility

For a 300Mbps router, such as the TP-Link N300 Wireless GPON router (TX-W6961N), the device supports:

• Wireless speeds up to 300Mbps on 2.4 GHz (802.11n standard)
• GPON port for fiber-to-the-home (FTTH) connections
• Four LAN ports for wired devices
• Support for bandwidth-intensive applications like streaming, gaming, and video calls This means your router can handle a fiber connection, but the maximum Wi-Fi speed will be limited to 300Mbps, even if your fiber plan offers higher speeds. Wired connections through the LAN ports may provide slightly better stability but are still limited by the router's hardware.

Performance Considerations

• Coverage area: 2.4 GHz Wi-Fi provides better range but lower speed; 5 GHz (if available) offers faster speeds but shorter range .
• Number of devices: Multiple devices sharing the 300Mbps bandwidth may reduce individual speeds.
• Future-proofing: If your fiber plan exceeds 300Mbps, consider upgrading to a Wi-Fi 5 (802.11ac) or Wi-Fi 6 (802.11ax) router to fully utilize higher speeds .

Recommended Setup

1. Install the ONT and connect the fiber cable.
2. Use an Ethernet cable to connect the ONT to the router's WAN port.
3. Power on the router and configure Wi-Fi settings.
4. For optimal performance, place the router centrally and minimize interference from walls or other electronics. In summary, a 300Mbps router works with fiber optic internet and is suitable for standard home use, but it will limit wireless speeds to 300Mbps. For higher-speed fiber plans, upgrading to a modern Wi-Fi 6 router is recommended to fully leverage your connection.