Black Box LFP421
Fiber to Ethernet Media Converter, 100 Mbps, SC Connector, 10 km Reach
The Black Box LFP421 is a compact Fiber to Ethernet Media Converter designed to connect legacy copper Ethernet devices to fiber-based networks. Supporting Fast Ethernet speeds of 100 Mbps and a distance reach of up to 10 km over single-mode fiber (SC connector), it is ideal for extending LANs over long distances.
As an official Black Box product, the LFP421 provides guaranteed compatibility and reliability, ensuring robust and energy-efficient performance in enterprise, campus, and industrial environments.
Features :
This Media Converter bridges electrical Ethernet signals to optical fiber for long-distance, EMI-resistant networking. It provides plug-and-play deployment with auto-sensing for speed and duplex, SC fiber port, and standard RJ-45 Ethernet interface.
Advanced Options :
The LFP421 supports advanced features including auto-negotiation, Link Fault Pass-Through (LFPT), loopback diagnostic support, and LED indicators for status monitoring. Its durability and compact chassis make it perfect for space-constrained racks or standalone use.
Product Key Features
- 100 Mbps Fiber to Ethernet media converter
- Up to 10 km reach over single-mode fiber
- SC fiber connector interface
- RJ-45 Ethernet port with auto-negotiation
- Compact, plug‑and‑play design
- Link Fault Pass-Through and diagnostics support
- Backed by Black Box reliability
Reliability & Performance :
The Black Box LFP421 delivers reliable and extended Ethernet connectivity over fiber, protecting networks against interference and distance limitations. It ensures stable throughput with minimum latency, providing mission-critical reliability for businesses, education, government, or industrial use.
Key Features :
- Fiber to Ethernet bridging
- Fast Ethernet (100 Mbps) support
- 10 km single-mode reach with SC connection
- Compact and durable design
- Trusted quality by Black Box





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