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Rectangular silver server power supply unit with rear exhaust grille and handle

DELL

DELL 550W Redundant Power Supply for PowerEdge R420 1J45G RYMG6 M95X4

SKU CH-KPSW-2FKRA

Redundant 550W power supply compatible with Dell PowerEdge R420 servers

  • Weight5LBS
  • 550 W redundant output keeps the server running during a module failure
  • Hot-swap design lets you replace a unit without powering down the R420
  • Dell part numbers 1J45G RYMG6 M95X4 confirm exact fit for PowerEdge R420
  • 90-day warranty covers the supply after installation
  • Model 641329915967 identifies the exact hardware revision

Dell 550W Redundant Power Supply

This is a 550W redundant power supply manufactured by Dell for the PowerEdge R420 server. It provides hot-swap capability to maintain uptime if one unit fails. The unit weighs 5 lbs and carries the manufacturer part numbers 1J45G, RYMG6 and M95X4.

Suitable for R420 maintenance and redundancy

IT teams replacing a failed module in a PowerEdge R420 or adding a second unit for redundancy will find this part matches the original specification. Buyers who need a different wattage, a non-redundant design or a supply for another server platform should look elsewhere.

550W output for PowerEdge R420

The decisive specification is the 550W output rating combined with the redundant form factor designed for the PowerEdge R420 chassis. Confirm the server model and required wattage before purchase to ensure compatibility.

Highlights

  • 550 W redundant output keeps the server running during a module failure
  • Hot-swap design lets you replace a unit without powering down the R420
  • Dell part numbers 1J45G RYMG6 M95X4 confirm exact fit for PowerEdge R420
  • 90-day warranty covers the supply after installation
  • Model 641329915967 identifies the exact hardware revision

Specifications

BrandDELL
Model641329915967
Weight5LBS

Questions about this item

Do I need a Dell PowerEdge R420 server to install this 550W redundant power supply?

Yes, the unit is built specifically for the PowerEdge R420 chassis and connects directly to its native power backplane.

Can I mix this 550W supply with the original power supply already in my R420?

The supply is designed for redundant operation in the R420, so it will share the load with a matching unit in the second bay.

How can I confirm the 550W redundant supply is operating correctly after installation?

The PowerEdge R420 management console will show both power supplies online, reporting healthy status and balanced load sharing.

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