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Black rectangular SFP+ transceiver module with LC connector and silver bail latch

Black Box Corporation

Black Box Corporation LSP421 SFP+ 10G 850nm LC 300m

SKU CH-1T29-95J1B

10 Gbps SFP+ transceiver for 850 nm multimode fibre up to 300 m with LC connectors

  • Form factorLSP421
  • Product typeTransceiver
  • Media conversionSFP+ 10G 850 nm MM 300m LC, Black Box SFP+ Module
  • Product dimensions11.43 cm × 6.35 cm × 2.54 cm
  • Product weight0.4 kg
  • In the box1, unit
  • 10 Gbps links up to 300 metres over multimode fibre
  • 850 nm wavelength optimised for short-range enterprise links
  • LC duplex connector enables quick patch-panel insertion
  • Extended diagnostics simplify link troubleshooting and monitoring
  • Compact 11.43 cm module fits dense SFP+ cages

Product Identity

The Black Box Corporation LSP421 is an SFP+ transceiver built for 10 Gigabit Ethernet links over multimode fibre. It suits network engineers and data-centre technicians who need a hot-pluggable module for short-range uplinks between switches or servers.

Bundled Impact

The package contains a single unit with no additional cables, software licences or mounting hardware. This keeps deployment straightforward for teams that already stock LC patch cords and compatible host ports.

Build and Connectivity

A metal housing measuring 11.43 cm by 6.35 cm by 2.54 cm and weighing .4 kilograms fits standard SFP+ cages and dissipates heat without active cooling. The LC duplex receptacle accepts standard multimode patch cables, enabling 850 nm operation up to 300 metres. The module is not intended for single-mode fibre runs or distances beyond the rated reach.

How it compares

Measured against everything we stock in SFP & SFP+ Transceiver Modules, at today’s prices. Recalculated every night.

Price $150.99
Typical for this category: the median of 1,471 items is $138.99.

Specifications

Product
Brand nameBLACK BOX NETWORK SERVICES
Model nameLSP421
Part numberLSP421
Product typeTransceiver
Size & build
Form factorLSP421
Product dimensions11.43 cm × 6.35 cm × 2.54 cm
Product weight0.4 kg
In the box
In the box1, unit
More details
Media conversionSFP+ 10G 850 nm MM 300m LC, Black Box SFP+ Module

Questions about this item

Will the LC connector on the LSP421 need periodic cleaning or replacement?

The LC duplex interface should be inspected and cleaned with a fibre scope and lint-free wipes whenever links are reconfigured; no scheduled replacement interval is defined for the connector itself.

What distance limit applies first when the LSP421 runs continuously at 10 Gbps?

The 300 m reach over OM3 multimode fibre is the primary limit; signal integrity degrades beyond that distance regardless of operating time.

How much heat does the LSP421 add to a switch chassis during all-day operation?

Typical SFP+ SR modules draw around 1 W, so the LSP421 contributes minimal thermal load and requires no extra cooling beyond standard switch airflow.

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