Is a 300Mbps router suitable for a 100Mbps fiber optic connection

Yes, a 300Mbps router can support a 100Mbps fiber optic connection, but actual performance depends on the router's WAN/LAN port speeds and internal processing capabilities.Key ConsiderationsWireless vs Wired Speeds: The "300Mbps" rating of a router typically refers to its maximum wireless link speed, not the actual internet speed you will get . Wired connections are limited by the router's LAN ports and the Ethernet cables used. If the router has 100Mbps LAN ports, it can fully handle a 100Mbps fiber connection over Ethernet. WAN Port and NAT Throughput: Even if the router's wireless speed is high, the WAN-to-LAN throughput may limit internet performance. For example, some 300Mbps routers like the TP-Link TL-WR841N can only handle around 90Mbps of real internet speed due to NAT processing limits . This means a 100Mbps fiber connection may not reach its full potential on older or lower-end routers. Fiber Compatibility: Fiber internet requires an Optical Network Terminal (ONT) that converts light signals to Ethernet. Your router must have a WAN Ethernet port to connect to the ONT. Most modern routers with standard Ethernet WAN ports can work with fiber, but older routers with only DSL or cable inputs may not be compatible . Wi-Fi Performance: Even if the router can handle 100Mbps on wired connections, Wi-Fi speeds may be lower due to interference, distance, and device limitations. A 300Mbps Wi-Fi router can theoretically support 100Mbps, but real-world speeds are often lower than the maximum wireless rating .RecommendationsCheck LAN/WAN Port Speeds: Ensure the router has at least 100Mbps ports for a 100Mbps fiber connection. Gigabit ports are preferable for future-proofing.Consider Router Age and NAT Throughput: Older routers may not fully utilize 100Mbps fiber due to processing limits.Upgrade if Needed: For optimal performance, especially with multiple devices or high-speed fiber plans, a modern Wi-Fi 5 or Wi-Fi 6 router with Gigabit ports is recommended . In summary, a 300Mbps router can support a 100Mbps fiber connection, particularly over wired Ethernet, but the actual internet speed may be limited by the router's hardware and NAT throughput. For full utilization of fiber speeds, ensure the router has compatible WAN/LAN ports and sufficient processing capability.