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Silver ATX power supply unit with single fan and multiple cable connectors visible

Replace Power

Replace Power RPSU-dlp2507f3cp 420W ATX power supply

SKU CH-4EER-DSSDA MPN RPSU-dlp2507f3cp

420W ATX power supply with reduced depth, 20+4 pin adapter, SATA connectors and full protection suite for legacy Dell Dimension and Optiplex systems

  • TypeATX
  • Fans1
  • Weight1.5
  • Replaces legacy Dell units with 420W output
  • 20+4 pin adapter fits 20 and 24 pin motherboards
  • Compact 5.9" depth suits tight chassis
  • Multiple protection circuits guard against overloads
  • Switchable 110-260V input works worldwide

Replacement for legacy Dell systems

This 420 watt ATX power supply replaces several older legacy units found in Dell Dimension, Optiplex, Poweredge and Workstation models. It provides a direct swap for systems requiring a standard ATX form factor with reduced depth. The unit includes a built-in 20+4 pin adapter to support both 24 and 20 pin motherboard connectors.

Practical limits of the ATX interface

The supply delivers +3.3V at 11A, +5V at 12A and dual +12V rails at 8A each, with a -12V line at 0.3A and +5VSB at 2A. Total output is rated at 420 watts across these rails. Input voltage is switchable between 110 and 260 volts AC at 50 or 60 Hz. Protections include over current, over power, over voltage and short circuit safeguards.

Connector count decides fit

The cable set provides one ATX 20+4 pin, one P4 12V 4-pin, three SATA 15-pin, three LP4 4-pin and one floppy 4-pin connector. Builders needing more SATA or peripheral leads than this will require a different unit. Physical dimensions are 5.9 inch width, 3.4 inch height and 4 inch depth, weighing 1.5 units.

Points forts

  • Replaces legacy Dell units with 420W output
  • 20+4 pin adapter fits 20 and 24 pin motherboards
  • Compact 5.9" depth suits tight chassis
  • Multiple protection circuits guard against overloads
  • Switchable 110-260V input works worldwide

Caractéristiques

BrandReplace Power?
ModelRPSU-dlp2507f3cp
TypeATX
Fans1
Weight1.5

Questions sur cet article

Should I pick the 420 W model or a lower-wattage unit for my Dell Dimension 2400?

The 420 W unit replaces the original supply in the Dimension 2400 and provides extra headroom for added drives or cards.

What does the 420 W rating mean once the supply is installed in a Dell OptiPlex GX240?

It delivers up to 420 W total across all rails, with +3.3 V at 11 A, +5 V at 12 A and two +12 V rails at 8 A each.

How does the 20+4 pin ATX connector work with the 20-pin motherboard in a Dell Precision 340?

The 20+4 pin plug splits so you can use only the 20-pin portion for the Precision 340 motherboard.

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