HP J4858C Mini-GBIC Transceiver Module

HP J4858C – 1G SFP LC SX Transceiver

Overview :

The HP J4858C is a 1 Gbps Small Form‑Factor Pluggable (SFP) transceiver module intended for engineers deploying optical links in enterprise or data‑centre networks. Engineers use it to extend full‑duplex Gigabit Ethernet links over multimode fibre, solving connectivity between switches or routers where copper is impractical. It offers up to 550 m reach on 50 µm multimode fibre (500 m typical) and supports the IEEE 802.3z 1000BASE‑SX standard. The module is suitable in campus wiring closets, wiring‑distribution areas and data‑center server‑farms, fitting into SFP ports on switches from the HP/Aruba family. It integrates with existing fibre infrastructure and allows hot‑plug replacement without shutting down the equipment.

Key Features :

• Full‑duplex 1000BASE‑SX LC port for 1 Gbps data rate

• Maximum reach of 550 m on 50 µm MMF (OM2/OM3)

• 850 nm nominal transmitter wavelength for MMF links

• Hot‑pluggable SFP form‑factor for easy swap‑out

• Supports Digital Optical Monitoring (DOM) diagnostics

Specifications