How much fiber optic cable does the 842n router support

The TL-WR842N does not directly support fiber optic cables; it connects via Ethernet from a fiber modem or ONT.

The TP-Link TL-WR842N is a 2.4 GHz wireless N router with Fast Ethernet LAN and WAN ports (10/100 Mbps) for wired connections . It does not include an SFP port or any native fiber optic interface, so it cannot be connected directly to a fiber optic line. To use fiber internet with this router, you need a fiber modem or Optical Network Terminal (ONT) provided by your ISP, which converts the fiber signal into an Ethernet connection that the TL-WR842N can use .

Connection Setup with Fiber

1. Fiber Modem/ONT: The ISP provides a device that terminates the fiber line and outputs Ethernet.
2. Ethernet WAN Port: Connect the Ethernet output from the ONT to the WAN port of the TL-WR842N.
3. LAN Distribution: The router then distributes internet to devices via its LAN ports or Wi-Fi.

Key Considerations

• Speed Limitation: The TL-WR842N supports Fast Ethernet (100 Mbps), so even if your fiber plan is faster, the router will cap wired speeds at 100 Mbps.
• Wi-Fi Performance: Wireless N provides up to 300 Mbps, but real-world speeds are usually lower, especially with multiple devices.
• Compatibility: Works with any fiber service as long as the ONT outputs standard Ethernet. In summary, the TL-WR842N cannot directly handle fiber optic cables; it relies on a fiber modem or ONT to convert the signal to Ethernet, and its maximum wired speed is limited to 100 Mbps .