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Small rectangular SFP transceiver with silver metal body, black LC connector, and gold edge contacts

AddOn

AddOn J4858C-AO SFP transceiver 1000Base-SX 850nm 550m LC

SKU CH-839T-4QGXF MPN J4858C-AO

An SFP transceiver delivering 1-Gigabit connectivity over multimode fibre up to 550 metres using an 850 nm LC interface

  • Product typeTransceiver
  • Supported protocolsTCP/IP
  • HighlightsCompatible OEM: HP Compatible With OEM Part Number(s): J4858
  • Product weight0.07
  • HP J4858C compatible SFP for drop-in gigabit upgrades
  • SFP form factor delivers 1-Gigabit speed for reliable connectivity
  • LC connector links to multi-mode fiber at 850nm wavelength
  • Full-duplex gigabit reach up to 550 meters on multimode fiber
  • Hot-swappable transceiver initialises identically to OEM modules

HP-Compatible SFP Transceiver

The AddOn J4858C-AO is a hot-swappable SFP transceiver designed for Gigabit Ethernet ports. It provides a 1000Base-SX link over multimode fibre at 850 nm with LC connectors. The module is factory programmed for HP J4858C compatibility and weighs 0.07 kg. It suits network teams needing a drop-in replacement for OEM optics.

Suits HP Switch Fleets

This unit suits administrators maintaining HP ProCurve or compatible switches that require the J4858C part number. It is not for single-mode fibre runs, longer campus links, or 10-Gigabit uplinks. Buyers needing DOM monitoring, extended temperature ranges, or non-HP vendor lock-in should evaluate other modules.

550-Metre Multimode Reach

The transceiver comfortably handles full-duplex gigabit traffic up to 550 metres on OM1 or OM2 multimode fibre. Beyond that distance the optical budget is exhausted and errors rise. It runs out on single-mode cable, 10G speeds, or any link requiring diagnostic optical monitoring.

How it compares

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

Price $53.99
Cheaper than about 71% of the 1,471 comparable items (median $138.99).

Specifications

Product
Brand nameAddOn - Network Upgrades
Model nameJ4858C-AO
Product typeTransceiver
Connectivity
Supported protocolsTCP/IP
Size & build
Shipping weight0.23 kg
Package size177 × 147 × 3 mm

Questions about this item

Does my switch need an open SFP slot to accept this J4858C-AO transceiver?

Yes, the module plugs directly into any standard SFP port that supports 1000Base-SX optics.

Will this 850 nm module work in a link where the other end uses a different wavelength?

Both ends of a fiber link must use the same 850 nm wavelength, so the far-side transceiver must also be an SX type.

After installation, how can I confirm the link is operating at the rated 550 m reach?

Verify the port shows a 1000Base-SX connection with no errors and that the fiber run does not exceed 550 m of multi-mode cable.

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