# Network transceiver module HP QSFP X140 40G JG325B-RFB MPO SR4

**URL:** https://aio.lv/en/product--hp-jg325b-rfb--7232535
**Data updated:** 2026-01-12 19:31 (EET)
**Category:** Network Transceiver Modules
**Manufacturer:** HP
**Manufacturer code:** JG325B-RFB
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

HP QSFP X140 40G JG325B-RFB MPO SR4 is a QSFP network transceiver module designed for 40 Gigabit Ethernet links. It uses an MPO connector and SR4 multimode optical interface for short-range fiber connections. Suitable for data center switching and server interconnects, it provides compact, hot-pluggable 40G connectivity for high-density environments.

## Long description

HP QSFP X140 40G JG325B-RFB MPO SR4 is a QSFP network transceiver module engineered for 40 Gigabit Ethernet short-range links. The module implements an SR4 multimode optical interface and uses an MPO connector to support parallel fiber connectivity. It is hot-pluggable and designed for use in high-density data center switching and server interconnect environments where compact 40G ports are required.
Advantages
The transceiver provides standardized 40G QSFP form factor compatibility with HP switches and other compatible networking equipment, enabling straightforward integration into existing fiber infrastructure. Its MPO SR4 multimode interface supports cost-effective short-range connections over OM3/OM4 fiber and reduces the number of fibers required per link through parallel lanes. Hot-pluggable design simplifies installation and replacement without powering down equipment.
Suitable for
Data center top-of-rack and spine switching
40 Gigabit Ethernet server aggregation and uplinks
Short-range multimode fiber links using MPO SR4
High-density rack environments requiring compact QSFP ports
Key specifications
Brand: HP
Model / MPN: JG325B-RFB
Form factor: QSFP (Quad Small Form-factor Pluggable)
Data rate: 40 Gigabit Ethernet
Interface: MPO connector, SR4 multimode optical
Reach: Short-range multimode (OM3/OM4 — SR4)
Hot-pluggable: Yes
Category: Network transceiver module
How to use
Install the HP QSFP X140 40G JG325B-RFB MPO SR4 by inserting the QSFP module into a compatible QSFP port on a switch or network device until it seats securely. Connect an MPO SR4 multimode patch cable between the module and the mating MPO connector on the corresponding device or breakout assembly. Ensure the fiber type matches the SR4 specification (OM3 or OM4) and that cable polarity and MPO alignment are correct. Verify link status through the host device management interface and monitor port LEDs for operational indicators.
Usage recommendations
Use multimode OM3 or OM4 fiber assemblies matched to SR4 requirements, keep fiber connectors clean to avoid signal loss, and follow ESD precautions when handling the transceiver. Confirm compatibility with your switch firmware and optics support list before deployment to ensure proper link negotiation and performance.

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### What is the warranty period?

All HP 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 service centers and through AiO.lv

### Can the product be returned after purchase?

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