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Black Box LE2122A-R4 AutoCross Media Converter - RJ45 to ST Duplex Multi-mode Fiber - 2 km - External Power
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Product Features
Technical Overview
The LE2122A-R4 handles media conversion between twisted pair copper and optical fiber. It features one RJ45 port for Ethernet connectivity and one ST duplex port for multi-mode fiber, operating at an 850 nm wavelength. The converter supports a maximum distance of 2 km (1.24 miles) over fiber, extending network reach beyond typical copper limitations.
Power is supplied via an external power adapter, ensuring reliable operation without drawing from network equipment. The device is compact, measuring 1 inch in height, 3 inches in width, and 4 inches in depth, with a weight of approximately 6.4 ounces (181.44 grams).
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
This media converter offers practical benefits for network infrastructure by enabling seamless integration of fiber optic cabling into existing copper-based networks. Its design prioritizes ease of use and reliability in diverse deployment scenarios.
Distance Extension
Extend network segments up to 2 km with multi-mode fiber, overcoming the distance limitations of standard Ethernet cabling while maintaining signal integrity.
- 2 km maximum distance
- Fiber optic immunity to EMI
Simplified Deployment
The external form factor and plug-and-play design eliminate the need for internal card installation, reducing setup time and compatibility concerns with host devices.
- No internal installation
- External power supply
Deployment / Use Cases
The LE2122A-R4 is ideal for environments where network segments need to span longer distances or traverse areas with high electromagnetic interference. It converts between copper and fiber media, facilitating hybrid network architectures.
Common applications include connecting buildings within a campus, extending networks in industrial settings with machinery interference, or integrating fiber backbones into office networks. Its TAA compliance makes it suitable for government or educational procurement where regulatory adherence is required.
Campus Network Extension
Connect separate buildings using fiber for longer runs, with copper endpoints for local devices, ensuring stable connectivity across distances.
Industrial Networking
Use fiber to bypass electromagnetic interference from industrial equipment, maintaining network reliability in challenging environments.
Physical Profile
The converter has a compact external design with dimensions of 1 inch in height, 3 inches in width, and 4 inches in depth. Its lightweight construction at approximately 6.4 ounces allows for flexible placement on desks, shelves, or mounted surfaces. The external power supply ensures easy replacement and reduces heat buildup within the unit.
- Width
- 3" (76.20 mm)
- Depth
- 4" (101.60 mm)
- Height
- 1" (25.40 mm)
- Weight
- 6.40 oz (181.44 g)
- Length
- 850 nm
Highlights
- Converts RJ45 Ethernet to ST duplex multi-mode fiber for hybrid network setups.
- Supports up to 2 km (1.24 miles) distance over fiber optic cable.
- Operates at 850 nm wavelength with 10Base-T and 10Base-FL network technologies.
- External form factor with power supply for easy, tool-free installation.
- TAA compliant and manufactured in the United States.
- Lifetime limited warranty for long-term reliability assurance.
- Compact size: 1" H × 3" W × 4" D (25.4 × 76.2 × 101.6 mm).
- Weighs only 6.4 oz (181.44 g) for portable deployment flexibility.
Specifications
| Specifications | |
|---|---|
| Manufacturer | Black Box Corporation |
| Manufacturer Part Number | LE2122A-R4 |
| Brand Name | Black Box |
| Product Line | AutoCross |
| Product Name | AutoCross Media Converter |
| Product Condition | New |
| 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 ST Ports | 1 |
| ST Port Type | Duplex |
| Media & Performance | |
| Media Type Supported | Optical Fiber,Twisted Pair |
| Fiber Mode Supported | Multi-mode |
| Fiber Optic Cable Wavelength | 850 nm |
| Maximum Distance Supported | 2 km (1.24 Mile) |
| Network & Communication | |
| Ethernet Technology | Ethernet |
| Network Technology | 10Base-T,10Base-FL |
| Power Description | |
| Power Source | Power Supply |
| Physical Characteristics | |
| Form Factor | External |
| Height | 1" (25.40 mm) |
| Width | 3" (76.20 mm) |
| Depth | 4" (101.60 mm) |
| Weight (Approximate) | 6.40 oz (181.44 g) |
| Miscellaneous | |
| Country of Origin | United States |
| TAA Compliant | Yes |
| Warranty | |
| Limited Warranty | Lifetime |
User Manual
FAQ
What does this media converter do?
The Black Box LE2122A-R4 converts network signals between a standard RJ45 Ethernet port (copper twisted pair) and an ST duplex multi-mode fiber optic port. This allows you to extend network segments using fiber cable for longer distances or in environments with electromagnetic interference, while maintaining connectivity to copper-based devices.
What is the maximum distance supported over fiber?
This converter supports a maximum distance of 2 kilometers (approximately 1.24 miles) when using multi-mode fiber optic cable. This extends network reach beyond typical copper Ethernet limits, making it suitable for connecting buildings or long hallway runs without signal degradation.
What type of fiber and connectors does it use?
It uses multi-mode fiber optic cable with an 850 nm wavelength, connected via an ST duplex port. The ST connector is a common bayonet-style fiber connector, providing a secure connection for duplex fiber links in network applications.
How is this converter powered?
The LE2122A-R4 is powered by an external power supply (included), which plugs into a standard AC outlet. This external power method simplifies installation and avoids the need for internal power draws from network equipment, enhancing reliability and ease of replacement.
Is this device TAA compliant?
Yes, this media converter is TAA (Trade Agreements Act) compliant and manufactured in the United States. This makes it eligible for procurement in government, educational, and other regulated environments where compliance with trade agreements is required.
What warranty does it come with?
Black Box provides a lifetime limited warranty for the LE2122A-R4 media converter. This warranty covers defects in materials and workmanship for the life of the product, offering long-term assurance and support for your network infrastructure investment.
| Qty | Price | Available |
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