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Rectangular silver plug-in power supply module with front exhaust vents and AC inlet

HPE Juniper Networking

HPE Juniper Networking JPSU-350-AC-AFO 350 W AC plug-in switch module

SKU CH-WYAV-3QTTW MPN JPSU-350-AC-AFO

A 350 W AC plug-in power supply for Juniper EX4300 series switches, supporting 120 V and 230 V input

  • Electrical Outlet Plug TypePower Supply
  • Delivers 350 W output for EX4300 series switches
  • Accepts 120 V AC and 230 V AC input worldwide
  • Plug-in module form factor enables tool-less installation
  • Weighs 2.40 lb for lightweight rack integration
  • Compatible with EX4300-24P, 24T, 48P, 48T and 32F models

Power supply for EX4300 switches

The HPE Juniper Networking JPSU-350-AC-AFO is a 350 W AC plug-in module built for Juniper Networks EX4300 series Ethernet switches. It accepts 120 V AC or 230 V AC input and fits the EX4300-24P, EX4300-24T, EX4300-48P, EX4300-48T and EX4300-32F models. Network engineers use it to power PoE and non-PoE configurations in campus and branch deployments.

Replaces failed or missing OEM units

This module replaces a factory power supply that has failed, been removed or was never populated in a redundant slot. The upgrade is worth it when a switch runs on a single source and needs N+1 resilience, or when a cold spare is required for rapid swap-out. It restores full 350 W output without changing the switch firmware or licensing.

Hot-plug install with correct orientation

The plug-in form factor slides into the rear bay and locks with a thumb screw; no tools or cabling are needed beyond the AC cord. The most common error is inserting the module upside-down, which prevents the connector from seating and can bend pins. Verify the airflow label faces the correct direction before applying force, then tighten the captive screw to secure the latch.

Highlights

  • Delivers 350 W output for EX4300 series switches
  • Accepts 120 V AC and 230 V AC input worldwide
  • Plug-in module form factor enables tool-less installation
  • Weighs 2.40 lb for lightweight rack integration
  • Compatible with EX4300-24P, 24T, 48P, 48T and 32F models

Specifications

BrandJuniper
Electrical Outlet Plug TypePower Supply
Shipping weight2.31 kg
Package size483 × 152 × 102 mm

Questions about this item

What clearance does the 2.40 lb plug-in module need inside an EX4300 chassis?

The unit slides into a standard EX4300 power-supply bay; allow space for the rear exhaust and AC inlet so cables do not block airflow.

Which latch must click to seat the module correctly in an EX4300-48P?

Push the module in until the spring-loaded ejection lever snaps fully closed; a loose lever means the connector is not mated.

When should the internal fan be cleaned on a 350 W unit running 120 V AC?

Inspect the fan intake every six months and vacuum dust if buildup is visible; no user-replaceable filter is fitted.

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