# SFP transceiver HP Enterprise J4859D 1.25Gbps 20km 1310nm

**URL:** https://aio.lv/en/product--hp-enterprise-sps-7120whpe-j4859d-oem--4389726
**Data updated:** 2025-12-31 08:36 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** HP Enterprise
**Manufacturer code:** SPS-7120WHPE (J4859D OEM)
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

HP Enterprise SFP transceiver J4859D is a small form-factor pluggable module supporting 1.25 Gbps data rate over single-mode fiber up to 20 km using a 1310 nm wavelength. Designed for network switches and routers with SFP ports, it enables reliable fiber links for campus, metro, and data center uplinks. The hot-pluggable module simplifies installation and replacement.

## Long description

HP Enterprise SFP transceiver J4859D is a hot-pluggable small form-factor module that supports 1.25 Gbps data rate over single-mode fiber (SMF) up to 20 km using a 1310 nm wavelength. The module uses an LC duplex connector, operates from 0 to 70°C, and requires 3.3 V power. It includes DMI diagnostics and is compatible with HP networking equipment for establishing reliable fiber uplinks in campus, metro or data center environments.
Advantages
The SFP transceiver provides a compact, hot-swappable solution for extending network links over single-mode fiber to 20 km while maintaining a 1.25 Gbps rate. Built-in DMI diagnostics enable monitoring of optical and electrical parameters, aiding fault detection and link maintenance. Compatibility with HP Enterprise switches and routers simplifies deployment and replacement without requiring device downtime.
Suitable for
 Fiber uplinks between switches and routers
 Campus and metro fiber links up to 20 km
 Data center server or aggregation uplinks
 Environments requiring 1310 nm single-mode connections
Key specifications
 Model: HP Enterprise J4859D (SPS-7120WHPE OEM)
 Form factor: SFP (small form-factor pluggable)
 Data rate: 1.25 Gbps (1000BASE-LX)
 Fiber type: Single-mode fiber (SMF)
 Maximum reach: 20 km
 Wavelength: 1310 nm (FP)
 Connector: LC duplex
 Operating temperature: 0 to 70 °C
 Supply voltage: 3.3 V
 Diagnostics: DMI (Digital Diagnostics Monitoring)
 Compatibility: HP Enterprise networking equipment
How to use
Power down is not required for installation; insert the hot-pluggable SFP module into an available SFP port on a compatible HP switch or router until it seats firmly. Connect LC duplex single-mode fiber patch cords, observing correct transmit/receive orientation. Verify link status via the device interface and monitor DMI parameters for optical power, temperature, and voltage to confirm proper operation.
Usage recommendations
Use single-mode fiber and LC duplex patch cords rated for 1310 nm. Keep connectors clean and perform DMI checks after installation to ensure signal levels and environmental parameters are within device specifications.

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### What is the warranty period?

All HP Enterprise products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized HP Enterprise service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

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