Home/Network & Accessories/Switch Module/HP J4858C/P ProCurve X121 1Gb/s 1000Base-SX Multi-...

Safe checkout

Secure payments

Fast dispatch

12 day handling

Free shipping

U.S. ground

Warranty & RMA

Support after delivery

HP J4858C/P ProCurve X121 1Gb/s 1000Base-SX Multi-Mode Fibre 850nm 550m Duplex LC Connector SFP Tran...

SKU J4858C/P
Brand HP
  • Data Rate: 1Gb/s (1000Base-SX)
  • Form Factor: SFP
  • Reach: 550m
  • Fiber Type: Multi-Mode Fiber (MMF)
  • Wavelength: 850nm
  • Connector Type: Duplex LC
  • Compatible with HP ProCurve switches
  • Hot-swappable for easy installation
Available to order

J4858C/P isn't on our shelf today — we source it to order. Request a quote and we'll confirm price and lead time within one business day.

Key specifications

See full specs ↓
Product Type
Transceiver Module
Interface
1Gb Ethernet
Form Factor
SFP
Fiber Type
Multi-Mode
Max Distance
550 m
Connector
LC Duplex

Product details

The HP J4858C/P ProCurve X121 is a 1Gb/s SFP transceiver designed for multi-mode fiber applications. It supports the 1000Base-SX standard, enabling transmission up to 550 meters over multi-mode fiber. This transceiver features an 850nm wavelength and a duplex LC connector.

Technical Information

Product TypeTransceiver Module
Interface1Gb Ethernet
Form FactorSFP
Fiber TypeMulti-Mode

Additional Specifications

Max Distance550 m
ConnectorLC Duplex
Wavelength850 nm
Standard1000Base-SX

Description

This 1Gb/s SFP transceiver module, identified as HP J4858C/P (ProCurve X121), is designed for reliable short-reach connectivity using multi-mode fiber optics. It adheres to the 1000Base-SX standard, enabling Gigabit Ethernet speeds over distances up to 550 meters. The 850nm wavelength is typical for short-wavelength, multi-mode fiber applications, making it suitable for within-building or campus network links. The module features a standard duplex LC connector, ensuring compatibility with common fiber optic patch cords and network infrastructure. As an SFP (Small Form-factor Pluggable) module, it is hot-swappable, allowing for network changes and upgrades without the need to power down equipment, which is critical for maintaining network uptime. Specifically designed for HP ProCurve networking equipment, this transceiver provides a seamless integration solution for switches and routers requiring Gigabit Ethernet connectivity over multi-mode fiber. It is an ideal choice for connecting servers, switches, and other network devices within data centers, wiring closets, and other enterprise environments where short-to-medium distance links are required.

Condition: Refurbished

Free U.S. ground shipping

Typically 12 days handling, 37 days in transit.

Purchase orders accepted

Government, enterprise, data center and small business.

Warranty & RMA support

See warranty and returns.

Buying 10+ units?

Get volume pricing and availability for J4858C/P.

Questions about this part?

Compatibility, condition, lead times — ask a specialist.

(888) 988-8093

Related products

Loading related inventory…