Black Box LFP421 Fiber to Ethernet Media Converter, 100 Mbps, SC, 10 km

Part No:LFP421 Write a Review

Condition:New

Brand:Black Box

Weight:1 lbs

Product Type:Fiber to Ethernet Media Converter

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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BrandBlack Box
SKULFP421
ConditionNew
Dimensions2.75 × 1 × 1 in
Weight1 lbs
Part NumberLFP421
Product TypeFiber to Ethernet Media Converter
Data Rate100 Mbps (Fast Ethernet)
Fiber TypeSingle-Mode Fiber (SMF)
ConnectorSC Connector
Maximum DistanceUp to 10 km
Wavelength1310 nm
Duplex SupportFull / Half duplex (auto-negotiation)
RJ-45 Port1 × 10/100 Mbps copper port
Auto MDI/MDIXSupported
DiagnosticsLoopback, LFPT (Link Fault Pass-Through)
IndicatorsLEDs: Power, Link/Activity, Speed
Power SupplyExternal DC (varies by SKU)
Power Consumption< 3W typical
Operating Temperature0°C to 50°C
Storage Temperature-20°C to 70°C
Humidity5–95%, non-condensing
EnclosureCompact metal case
ComplianceIEEE 802.3u (Fast Ethernet), RoHS, CE
WarrantyBacked by Black Box warranty

Warranty

Backed by Black Box warranty

Returns

We guarantee free replacements on all new/refurbished equipment in case of any defects.

  • Returns must be requested within 30 days of the original invoice date.
  • Merchandise must be unused and in original packaging; bulk-packed and refurbished items must have unbroken sealing tape.
  • A 25% restocking fee applies to non-defective merchandise returned by mistake.
  • Discontinued, close-out, and custom printed items are non-returnable unless defective.
  • Customer is responsible for return freight costs.

View full return policy

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