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J4858C-FM HP X121 1.25Gb/s 1000Base-SX 850nm 550m SFP Transceiver

SKU:

J4858C-FM

Weight: 3.00 lbs
Condition: Refurbished
  • 1.25 Gb/s data rate supporting Gigabit Ethernet speeds
  • 850nm wavelength optimized for short-range multimode fiber links
  • Maximum transmission distance up to 550 meters
  • Compact SFP form factor for flexible network integration
In stock

$103.70
Product Overview

The J4858C-FM HP X121 1.25Gb/s 1000Base-SX 850nm 550m SFP Transceiver enables efficient short-range optical communication within networking environments relying on multimode fiber connections. It fits into small form factor pluggable slots and works seamlessly with equipment designed for Gigabit Ethernet speeds, facilitating a smooth data flow across fiber optic infrastructures without unnecessary complexity.

General Information
Brand HP
Technical Information
Form Factor SFP
Media MMF
Type VCSEL
Power Consumption 0.8 W
Protocols 1000Base-SX
Connector LC Duplex
DOM Support No
Physical Characteristics
Weight 3.00
Condition Refurbished


Product Description

The J4858C-FM is an SFP transceiver module designed to facilitate high-speed optical communication over multimode fiber. It commonly appears in network environments requiring reliable short-range connectivity, where it helps deliver stable data transfer across fiber optic cables.

Often found in enterprise networks and data centers, this module supports seamless integration with compatible equipment, enabling network administrators to maintain efficient and consistent performance. Network professionals benefit from its standardized interface and robust construction, ensuring dependable operation.

Key Features

  • Supports 1.25 Gb/s data transmission at Gigabit Ethernet speeds
  • Utilizes 850nm wavelength optimized for multimode fiber
  • Allows connectivity over distances up to 550 meters
  • Compact SFP design ensures easy installation and scalability
  • Built to comply with industry-standard specifications for interoperability

This transceiver module plays a key role in maintaining network reliability by offering consistent optical link performance. Its ability to transmit data over multimode fiber makes it a practical component in network infrastructures requiring moderate reach without signal degradation. The straightforward design and adherence to interface standards contribute to its widespread usability.


Use Cases

The J4858C-FM is typically employed in data centers, enterprise LANs, and telecommunications networks where short-range fiber connections are essential. It serves users who require reliable, medium-distance optical links using existing multimode fiber cabling.

How It's Used:

  • Connecting network switches within a data center over multimode fiber for high-speed data exchange
  • Extending Gigabit Ethernet links in enterprise LANs without re-cabling
  • Supporting optical uplinks in campus environments where fiber distances do not exceed 550 meters
  • Integrating with modular networking equipment to enable scalable network architectures
  • Replacing or upgrading existing SFP modules to maintain network performance

By providing stable and standardized optical transmission, this transceiver supports operational efficiency and helps maintain network scalability. Its compatibility with common networking hardware ensures it fits well within diverse infrastructure setups requiring dependable short-range fiber connectivity.


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J4858C-FM HP X121 1.25Gb/s 1000Base-SX 850nm 550m SFP Transceiver
J4858C-FM HP X121 1.25Gb/s 1000Base-SX 850nm 550m SFP Transceiver
$103.70