We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
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

  • Fan configuration1
  • Product typeATX
  • Product 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.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $64.99
Cheaper than about 82% of the 10,869 comparable items (median $142.99).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameReplace Power
Model nameRPSU-KH624
Product typeATX
More details
Fan configuration1

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.

More in ATX Desktop Power Supplies

Similar items