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Silver ATX power supply with single fan, reduced depth, 20+4 pin connector visible

Replace Power

Replace Power RPSU-KH624 400 W ATX power supply

SKU CH-4Z7E-P3SZ7 MPN RPSU-KH624

A 400 W ATX power supply with reduced depth, 20+4 pin and 4-pin CPU connectors, three SATA and three LP4 leads, plus 110–260 V switchable input and full protection circuits

  • TypeATX
  • Fans1
  • Weight1.5
  • Replaces legacy Dell units with a 400 W upgrade
  • 20+4 pin connector fits both 20-pin and 24-pin motherboards
  • Reduced depth of 5.9 inches improves case compatibility
  • Multiple protections include over-current, over-voltage and short-circuit
  • Switchable 110-260 V AC input suits worldwide mains

Replacement Power Supply for Dell KH624

The Replace Power RPSU-KH624 is a 400 W ATX unit built to replace legacy Dell power supplies such as the KH624 and PS-6351-2 models. It fits standard ATX mounting points while offering a reduced depth for tighter chassis. The supply operates on 110-260 V AC input with a manual voltage switch.

400 W Capacity with Multi-Rail Output

The unit delivers 400 watts across +3.3 V, +5 V, -5 V, +12 V1, +12 V2, -12 V and +5 V standby rails. Protections include over-current, over-power, over-voltage and short-circuit safeguards. Hold-up time is rated at 17 ms minimum and rise time stays under 70 ms for stable power delivery.

20+4 Pin ATX and Peripheral Connectors

A single 20+4 pin ATX connector supports both 20-pin and 24-pin motherboards. One 4-pin P4 12 V connector, three SATA 15-pin connectors, three LP4 4-pin connectors and one floppy 4-pin connector are included. No modular cables or software utilities are bundled with this unit.

Highlights

  • Replaces legacy Dell units with a 400 W upgrade
  • 20+4 pin connector fits both 20-pin and 24-pin motherboards
  • Reduced depth of 5.9 inches improves case compatibility
  • Multiple protections include over-current, over-voltage and short-circuit
  • Switchable 110-260 V AC input suits worldwide mains

Specifications

BrandReplace Power
ModelRPSU-KH624
TypeATX
Fans1
Weight1.5

Questions about this item

Will the 5.9-inch depth and 20+4 pin ATX connector fit my older Dell KH624 chassis?

The reduced 5.9-inch depth and 20+4 pin ATX connector are designed to fit legacy Dell cases such as the KH624, supporting both 20-pin and 24-pin motherboards.

How can I verify the 400 W unit is delivering stable power after installation?

The supply includes over-current, over-power, over-voltage and short-circuit protection; a successful POST and stable 12 V, 5 V and 3.3 V rails under load confirm correct operation.

Which cables come in the box and what must I source separately?

The box provides a 24-pin ATX, one 4-pin P4, three SATA, three LP4 and one floppy connector; any additional PCIe or EPS cables must be purchased separately.

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