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Small rectangular SFP transceiver module with LC port and metal housing

AddOn

AddOn J4858B-AO SFP transceiver 1000Base-SX MMF 850nm 550m LC

SKU CH-J2FY-XNHJE MPN J4858B-AO

A 1 Gbps SFP transceiver for 550 m multi-mode fibre at 850 nm with an LC connector and 0 to 70 °C operating range

  • Compatible BrandHP®
  • Device TypeTransceiver
  • Form FactorSFP
  • Fiber CableMMF
  • ProtocolsTCP/IP
  • Ports1 x LC 1000Base-SX
  • TAA compliant for regulated procurement
  • 1 Gbps transfer rate over multimode fibre
  • 550 m reach at 850 nm wavelength
  • LC duplex connector fits standard SFP ports
  • Operates reliably from 0 to 70 °C

What this SFP transceiver does

The AddOn J4858B-AO is a hot-pluggable SFP module built for 1 Gbps Ethernet links over multi-mode fibre. It suits network engineers extending a LAN within a building or campus where the fibre run stays inside the 550 m reach limit. The LC duplex connector and 850 nm wavelength match standard OM1 or OM2 patch cables already in place.

The reach number that matters

This module is rated for 550 m on multi-mode fibre at 850 nm. If the planned link exceeds that distance, or if the installed cabling is single-mode, this part will not work and a different transceiver must be chosen.

Thermals noise and power in normal use

The transceiver operates from 0 °C to 70 °C without external cooling. It draws power directly from the host SFP cage and runs silently because it has no moving parts. Digital optical monitoring lets the switch report real-time temperature, voltage and optical levels for proactive maintenance.

Highlights

  • TAA compliant for regulated procurement
  • 1 Gbps transfer rate over multimode fibre
  • 550 m reach at 850 nm wavelength
  • LC duplex connector fits standard SFP ports
  • Operates reliably from 0 to 70 °C

Specifications

BrandAddOn
Part NumberJ4858B-AO
Compatible BrandHP®
Device TypeTransceiver
Form FactorSFP
Fiber CableMMF
ProtocolsTCP/IP
Ports1 x LC 1000Base-SX
Transfer Rate1 Gbps
FeatureCompatible OEM: HP®
Compatible With OEM Part Number(s) J4858B
Transceiver Type: SX
Reach: 550m
Connector: LC
Form Type: SFP
Wavelength: 850nm
Media: MMF
Speed Description: 1-Gigabit
Environment: 0 to 70C
Speed: 1000Base
DOM
Shipping weight0.16 kg
Package size121 × 70 × 30 mm

Questions about this item

What does the 1000Base-SX rating mean for actual throughput in a switch?

The module delivers a 1 Gbps Ethernet link over multi-mode fiber, so real-world throughput sits at line-rate gigabit for the connected port.

Which SFP interface standard does this transceiver use and what distance limit does it impose?

It follows the SFP 1000Base-SX specification with an LC connector, capping reach at 550 meters on 850 nm multi-mode fiber.

What physical slot and fiber patch cord does the module need to install?

It plugs into any standard SFP cage and requires a duplex LC multi-mode patch cable for the optical connection.

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