TP-Link TL-FC311B-20 Gigabit Single-Mode Media Converter

The TP-Link TL-FC311B-20 is a high-performance Gigabit Single-Mode Media Converter designed to convert electrical Ethernet signals into optical signals and vice versa. Built for long-distance network transmission, it’s the perfect solution for extending your network connection up to 20 kilometers using single-mode fiber.

⚙️ Product Overview

The TL-FC311B-20 enables smooth conversion between 1000BASE-T copper and 1000BASE-LX/LH fiber media, ensuring reliable, high-speed data transmission. It’s specifically designed for fiber-based networking environments such as enterprise buildings, ISPs, and industrial campuses that demand stable, long-distance Gigabit connectivity.

With a compact, sturdy metal housing and plug-and-play setup, this converter provides a cost-effective way to upgrade your network from copper to fiber without major infrastructure changes.

🌐 High-Speed Gigabit Connectivity

• Supports 1.25 Gbps full-duplex data rate over both fiber and Ethernet ports.

• Ensures low-latency and high-efficiency data transmission.

• Ideal for backbone connections, remote offices, and FTTH/FTTB applications.

💡 Long-Distance Fiber Transmission

• Uses single-mode fiber (SMF) to transmit data up to 20 km.

• Wavelength: Tx: 1310 nm, Rx: 1550 nm.

• Perfect for linking remote network segments, surveillance systems, and enterprise campuses.

🔌 Flexible Interface Design

• Equipped with:

  • 1× Gigabit RJ-45 Ethernet port (Auto MDI/MDIX)

  • 1× SC fiber port for single-mode fiber connection.

• Automatically detects and adjusts network speed and duplex settings for plug-and-play operation.

🧠 Intelligent Features for Reliable Performance

• Auto-negotiation on the RJ45 port for speed and duplex.

• Auto MDI/MDIX function eliminates the need for crossover cables.

• LED indicators provide real-time status for easy network monitoring.

• Forwarding mode ensures minimal packet loss and stable connectivity.

🌟 Key Features

• Converts Gigabit RJ-45 to single-mode fiber (SC)

• Transmission distance up to 20 km

• Wavelength: 1310 nm Tx / 1550 nm Rx

• Supports Auto MDI/MDIX and Auto-Negotiation

• LED indicators for easy status monitoring

• Works standalone or with TL-FC1420 rack chassis

• Compact and durable metal housing

• Plug-and-play—no configuration required