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Rectangular metal ATX power supply unit with single cooling fan and 20+4 pin main connector

Replace Power

Replace Power RPMPS3420-5 ATX Power Supply 20+4Pin

SKU CH-C0NZ-J9X19 MPN RPMPS3420-5

ATX power supply with 20+4-pin connector and single 12V rail for Dell Dimension 3000, 3100, 4400, 4550, 4600, 8200, E310 and E510 desktops

  • TypeATX
  • Fans1
  • Weight0.1
  • Direct replacement for Dell Dimension desktops
  • 20+4 pin connector fits 20-pin and 24-pin boards
  • Single +12 V rail delivers 16 A for stable power
  • Over-voltage protection guards components
  • 115/230 V input with 50/60 Hz range works worldwide

Replacement PSU for Dell Dimension

The Replace Power RPMPS3420-5 is an ATX power supply built to replace the original unit in Dell Dimension 3000, 3100, 4400, 4550, 4600, 8200, E310 and E510 desktops. It uses a 20+4 pin main connector that fits both 20-pin and 24-pin motherboard sockets. A single fan cools the unit.

Owners of listed Dell systems needing a direct swap

This supply suits owners of the named Dell Dimension models who need a like-for-like replacement when the original unit fails. Builders working on custom chassis, non-Dell motherboards or any platform requiring auxiliary PCIe power connectors should look elsewhere.

Single +12 V rail rated at 16 A

The +12 V rail delivers 16 A, which determines whether the unit can support the graphics card or drives in the target system. Combined 3.3 V and 5 V rails provide 13 A each, while the 5 V standby line supplies 2.5 A.

Points forts

  • Direct replacement for Dell Dimension desktops
  • 20+4 pin connector fits 20-pin and 24-pin boards
  • Single +12 V rail delivers 16 A for stable power
  • Over-voltage protection guards components
  • 115/230 V input with 50/60 Hz range works worldwide

Caractéristiques

BrandReplace Power
ModelRPMPS3420-5
TypeATX
Fans1
Weight0.1

Questions sur cet article

How do I install the 20+4Pin main connector and what step is often missed?

Align the 20+4Pin connector with the motherboard socket, press firmly until the latch clicks, and ensure the extra 4-pin section is fully seated on 24-pin boards.

What maintenance or replacement will the single fan need later?

The single fan should be cleaned of dust periodically; if bearing noise appears or airflow drops, replace the entire PSU as the fan is not user-serviceable.

What limit appears first under sustained load on the +12V rail?

The +12V rail is rated at 16A; continuous draw near that level will hit the single-rail current limit before thermal protection triggers.

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