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Rectangular silver server power supply unit with rear fan grille and power connector visible

DELL

DELL 550W Redundant Power Supply for PowerEdge R320 R420

SKU CH-KKQA-HDA2Q

Delivers 550W redundant power for Dell PowerEdge R320 and R420 servers

  • Product weight5 lb (2.27 kg)
  • 550 W redundant output keeps the server running if one unit fails
  • Designed for PowerEdge R320 and R420 chassis for direct fit
  • Hot-swap capability lets you replace a module without downtime
  • 0000 lb unit weight simplifies rack load planning
  • 90 day warranty covers early-life failures

Dell 550W Redundant Power Supply

This Dell 550W redundant power supply is built for Dell PowerEdge R320 and R420 servers. It delivers 550 watts of output in a hot-swap form factor. The unit is new and carries the manufacturer model number 641329915462. It suits administrators replacing a failed module or adding redundancy to a supported chassis.

Capacity and headroom

The 550W rating provides ample headroom for typical dual-socket configurations in the R320 and R420 platforms. Redundant operation allows the server to continue running if one supply fails. The module weighs 5.0000LBS and fits the standard redundant bay. It does not support servers outside the listed compatibility list.

Compatibility decides fit

Compatibility is limited to Dell PowerEdge R320 and R420 servers as stated by the manufacturer. Part numbers 1J45G, RYMG6 and M95X4 identify the correct replacement. Buyers with other PowerEdge models or non-Dell hardware cannot use this unit. No other server generations or form factors are supported.

How it compares

Measured against everything we stock in Server & Hot-Plug PSUs, at today’s prices. Recalculated every night.

Price $118.99
Cheaper than about 59% of the 3,798 comparable items (median $131.99).

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Specifications

Product
Brand nameDELL
Model name641329915462
Size & build
Product weight5 lb (2.27 kg)

Questions about this item

Will the 550W redundant unit share load with the existing supply in my PowerEdge R320?

Yes, the 550W redundant supply is designed for hot-plug load sharing in PowerEdge R320 and R420 servers.

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

The server management console reports each supply’s status as OK and shows balanced wattage draw across both units.

Does the package include the power cables or only the 550W supply module?

Only the 550W redundant power supply module is included; IEC power cables must be sourced separately.

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