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Dell 495W server power supply unit, silver metal housing with integrated fan grille

DELL

DELL Server Power Supply 495W N24MJ for T320 T420 T620 R620 R720

SKU CH-196S-QD9NR

495 watt proprietary server power supply for Dell PowerEdge T320, T420, T620, R620 and R720 systems, delivering 500 watt continuous output at 40 degrees with 80

  • TypeProprietary Power Supply
  • Delivers 500 W continuous output at +40 °C ambient
  • 80 PLUS certified with 80 % typical-load efficiency
  • Active PFC and 100 000-hour MTBF for reliable operation
  • Built-in OPP, OVP and SCP protect connected hardware
  • Compatible with PowerEdge T320, T420, T620, R620 and R720 servers

Proprietary Dell Server PSU

The Dell 495W N24MJ power supply is a proprietary unit designed for PowerEdge T320, T420, T620, R620 and R720 servers. It delivers 500W continuous output at up to 40°C ambient temperature and carries 80 PLUS certification for 80% typical efficiency. Active power factor correction and a robust +12V rail support demanding server workloads. Industry-grade protections include OPP, OVP and SCP.

Build Integration and Cabling

This supply fits directly into the listed PowerEdge chassis without adapters. It provides two PCIe 6+2-pin connectors for GPU or add-in card power. Compliance with Intel ATX 12V 2.31 and EPS 12V 2.92 standards ensures electrical compatibility with supported motherboards. The design frees standard ATX bays for other components in compatible enclosures.

Suitability and Limits

Ideal for administrators replacing a failed unit in the specified Dell rack or tower models. The 495W rating suits configurations within that power envelope. Buyers needing higher wattage for dense GPU deployments should verify chassis limits first. Those building custom white-box servers requiring standard ATX or redundant CRPS form factors cannot use this proprietary design.

Highlights

  • Delivers 500 W continuous output at +40 °C ambient
  • 80 PLUS certified with 80 % typical-load efficiency
  • Active PFC and 100 000-hour MTBF for reliable operation
  • Built-in OPP, OVP and SCP protect connected hardware
  • Compatible with PowerEdge T320, T420, T620, R620 and R720 servers

Specifications

TypeProprietary Power Supply

Questions about this item

At what temperature is the 500 W continuous rating guaranteed?

The 500 W continuous output is rated at plus 40 degree ambient.

How loud does the fan get and how much heat does the unit dump during all-day operation?

80 PLUS certification means 80 percentage efficiency under typical load, so roughly 20 percent of input power becomes heat; active PFC keeps current draw stable.

Which connectors must my server already provide for this supply to work?

It uses a proprietary Dell form factor and supplies two PCI E 6+2-pin connectors for GPU or add-in cards.

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