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Rectangular metal ATX power supply unit with single fan grille and 20+4 pin connector visible

Replace Power

Replace Power RPMPS3420-10 400W ATX power supply

SKU CH-QPKZ-NHHBF MPN RPMPS3420-10

400W ATX power supply with single 12V rail and 20+4 pin connector replaces Dell PowerEdge SC420 units

  • TypeATX
  • Fans1
  • Weight0.1
  • Delivers 400W continuous output for stable system operation
  • Single-rail design provides +12V at 16A for modern components
  • Wide 115/230V input range suits global mains supplies
  • MTBF exceeds 100,000 hours for long service life
  • 20+4 pin ATX connector fits standard motherboards

400 W ATX replacement for Dell PowerEdge SC420

This ATX power supply replaces the original Dell G4265, PH344, KH624 and X2634 units used in the PowerEdge SC420 server. It delivers 400 W from a single 12 V rail rated at 16 A, with 3.3 V and 5 V rails each rated at 13 A. A 20+4 pin main connector and a dedicated 12 V plug provide the required ATX power connections. One fan cools the unit.

Suits owners of a Dell PowerEdge SC420 needing

Builders who need redundant power modules, higher wattage for modern graphics cards, or modular cabling for custom cable management should look at other products. The fixed cable set and single 12 V rail limit flexibility for high-end workstation builds. Systems requiring 24/7 redundant operation are not addressed by this design.

Single 12 V rail rated at 16 A

The 12 V rail supplies up to 16 A, which determines whether the unit can power the installed CPU, drives and expansion cards. Combined 3.3 V and 5 V output is rated at 13 A each, while the 5 V standby rail provides 2.5 A. Input voltage auto-ranges between 115 V and 230 V at 50 Hz or 60 Hz. Hold-up time is at least 17 ms at nominal input.

Puntos fuertes

  • Delivers 400W continuous output for stable system operation
  • Single-rail design provides +12V at 16A for modern components
  • Wide 115/230V input range suits global mains supplies
  • MTBF exceeds 100,000 hours for long service life
  • 20+4 pin ATX connector fits standard motherboards

Especificaciones

BrandReplace Power
ModelRPMPS3420-10
TypeATX
Fans1
Weight0.1

Preguntas sobre este artículo

What connectors come with the RPMPS3420-10 and will I need any extra cables?

The unit provides a 20+4-pin ATX connector and a +12V connector. No additional cables are included, so any peripheral or drive power leads must be sourced separately.

The specs list several voltage rails; which one should I check to match my Dell PowerEdge SC420?

The +12V rail delivers 16A, the +5V and +3.3V rails each deliver 13A, and the +5VSB rail delivers 2.5A. These figures match the original Dell G4265, PH344, KH624 and X2634 requirements.

What does the 400W rating mean for everyday use in the SC420?

The 400W is the combined maximum output across all rails. The +12V rail supplies up to 16A for processor and drive power, while the 17ms hold-up time and sub-70ms rise time keep voltages stable during brief mains dips.

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