TP-LINK FC311B-20 Gigabit WDM Media Converter - 1 x RJ-45 to 1 x SC Duplex Single-mode - 1310/1550 nm - 20 km
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Product Features
Technical Overview
This media converter operates at Gigabit Ethernet speeds (1000 Mbit/s) and supports 10/100/1000Base-T, 100Base-TX, and 1000Base-TX network standards over twisted pair. The RJ-45 port features auto-negotiation for speed, duplex mode, and Auto-MDI/MDIX, eliminating the need for crossover cables and simplifying installation.
On the fiber side, the SC duplex port connects to single-mode fiber with 9/125 µm core/cladding specifications, using 1310 nm and 1550 nm wavelengths for bidirectional communication. WDM technology allows both transmit and receive signals to travel on the same fiber, effectively doubling the capacity of the fiber link compared to traditional dual-fiber setups.
This section brings together practical product details such as Total Number of Ports, Network (RJ-45), Number of Network (RJ-45) Ports, Media Type Supported, so buyers can judge configuration, deployment fit, and day-to-day suitability with less guesswork.
Key Product Advantages
The FC311B-20 delivers practical benefits for network extension projects, combining robust performance with deployment flexibility. Its WDM technology reduces fiber count requirements, lowering material costs and simplifying cable management in dense environments.
Extended Reach
Supports distances up to 20 km, enabling connectivity between buildings, campuses, or remote sites without signal degradation.
- Ideal for long-haul applications
- Maintains Gigabit performance over fiber
Plug-and-Play Operation
Auto-negotiation features handle speed, duplex mode, and cable type detection automatically, minimizing configuration time.
- No manual switch settings required
- Compatible with existing network gear
Deployment / Use Cases
This media converter is suited for scenarios where extending Ethernet networks beyond copper limitations is necessary. Common applications include connecting separate buildings in a campus, linking remote offices to a central data center, or integrating fiber backbones into existing copper-based networks.
In industrial settings, it can bridge control systems across large facilities, while in enterprise environments, it supports high-bandwidth connections for video surveillance, VoIP systems, or data backup links. The rack-mountable form factor allows for tidy installation in server rooms or network closets, and the standalone design enables quick desktop deployment for temporary or small-scale needs.
Building-to-Building Connectivity
Extend network segments between structures using existing or new single-mode fiber runs, avoiding Ethernet distance limits.
- Uses standard SC connectors
- Weather-resistant fiber options available
Network Modernization
Integrate fiber into legacy copper networks to improve performance and future-proof infrastructure without full replacement.
- Backward compatible with 10/100 Mbps
- Scalable for growing bandwidth demands
Physical Profile
The converter measures 1.06 inches in height, 3.72 inches in width, and 2.87 inches in depth (27 × 94.50 × 73 mm), making it compact enough for space-constrained installations. Its dual form factor supports both standalone desktop use and rack mounting, with a sturdy construction that ensures reliable operation in various environments. The small footprint and lightweight design facilitate easy placement on shelves, in cabinets, or directly on equipment racks.
- Width
- 3.72" (94.50 mm)
- Depth
- 2.87" (73 mm)
- Height
- 1.06" (27 mm)
- Length
- 1310 nm,1550 nm
What's in the Box
The package includes all necessary components for immediate deployment.
Highlights
- Converts RJ-45 Ethernet to SC duplex single-mode fiber with Gigabit speed
- Uses WDM technology for bidirectional data on a single fiber strand
- Extends network distance up to 20 km (12.43 miles)
- Supports 1310 nm and 1550 nm wavelengths for flexible fiber compatibility
- Auto-negotiates speed, duplex mode, and Auto-MDI/MDIX for plug-and-play setup
- Compact standalone or rack-mountable form factor (1.06″ H × 3.72″ W × 2.87″ D)
- Compatible with 10/100/1000Base-T, 100Base-TX, and 1000Base-TX network standards
- Includes power adapter and installation guide for quick deployment
Specifications
| Specifications | |
|---|---|
| Manufacturer | TP-LINK Technologies Co., Ltd |
| Manufacturer Part Number | FC311B-20 |
| Brand Name | Omada |
| Product Model | FC311B-20 |
| Product Name | Gigabit WDM Media Converter |
| Product Type | Transceiver/Media Converter |
| Interfaces/Ports | |
| Total Number of Ports | 2 |
| Network (RJ-45) | Yes |
| Number of Network (RJ-45) Ports | 1 |
| Number of SC Ports | 1 |
| SC Port Type | Duplex |
| Media & Performance | |
| Media Type Supported | Twisted Pair,Optical Fiber |
| Fiber Mode Supported | Single-mode |
| Fiber Optic Cable Wavelength | 1310 nm,1550 nm |
| Maximum Data Transfer Rate | 1000 Mbit/s |
| Maximum Distance Supported | 20 km (12.43 Mile) |
| Fiber Optic Cable Core/Cladding Specification | 9/125 µm |
| Network & Communication | |
| Ethernet Technology | Gigabit Ethernet |
| Network Technology | 10/100/1000Base-T,100Base-TX,1000Base-TX |
| Physical Characteristics | |
| Form Factor | Standalone,Rack-mountable |
| Height | 1.06" (27 mm) |
| Width | 3.72" (94.50 mm) |
| Depth | 2.87" (73 mm) |
| Miscellaneous | |
| Package Contents | Gigabit WDM Media Converter Power Adapter Installation Guide |
User Manual
FAQ
What does this media converter do?
The TP-LINK FC311B-20 converts signals between a standard RJ-45 Ethernet port and an SC duplex single-mode fiber optic port. It enables network extension over fiber cables, supporting distances up to 20 km while maintaining Gigabit Ethernet performance. This allows you to connect copper-based network equipment to fiber infrastructure for longer reach and better signal integrity.
What is WDM technology and why is it beneficial?
Wavelength Division Multiplexing (WDM) allows the converter to transmit and receive data on a single fiber strand using different wavelengths (1310 nm and 1550 nm). This reduces the number of fibers required compared to traditional dual-fiber setups, lowering cabling costs and simplifying installation. It effectively doubles fiber utilization, making it efficient for network expansions or new deployments.
What type of fiber cable does this converter support?
It supports single-mode fiber with 9/125 µm core/cladding specifications. Single-mode fiber is ideal for long-distance applications like the 20 km range this converter offers, as it minimizes signal loss over extended runs. You'll need SC duplex connectors on the fiber cable to plug into the converter's port.
Can this converter be rack-mounted?
Yes, the FC311B-20 has a dual form factor that supports both standalone desktop use and rack mounting. Its compact dimensions (1.06″ H × 3.72″ W × 2.87″ D) make it easy to install in standard server racks or network cabinets, allowing for organized deployment in data centers or equipment rooms.
What network speeds does it support?
It supports Gigabit Ethernet at 1000 Mbit/s, with backward compatibility for 10 Mbps and 100 Mbps speeds. The RJ-45 port auto-negotiates speed and duplex mode (half or full duplex), and includes Auto-MDI/MDIX to automatically detect cable type, ensuring compatibility with various switches, routers, and other network devices without manual configuration.
What is included in the package?
The package contains the Gigabit WDM Media Converter unit, a power adapter for operation, and an installation guide. These components provide everything needed for basic setup and deployment, allowing you to connect the converter to your network and fiber cable immediately after unboxing.
| Qty | Price | Available |
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