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Grey ATX power supply unit with single fan

Replace Power

Replace Power AP-MPS3ATX30-7 power supply 300W

SKU CH-Y8CB-Z23HN MPN AP-MPS3ATX30-7

300W ATX replacement supply for Dell PowerEdge SC430 and SC440 with 20+4-pin, 4-pin, three SATA, two peripheral and one floppy connector

  • Fan configuration1
  • Product colorGrey
  • Product typeATX
  • Product weight0.1
  • 300W steady output for Dell PowerEdge SC430 SC440
  • High-efficiency design keeps ripple and noise low
  • Over-voltage protection safeguards connected components
  • Single fan cools the grey ATX chassis
  • Full connector set: 20+4-pin ATX, 4-pin CPU, SATA, peripheral, floppy

Purpose and fit

This 300 W ATX power supply replaces the original unit in Dell PowerEdge SC430 and SC440 servers. It fits builders who need a direct drop-in for those chassis or a basic ATX source for legacy systems.

Capacity and headroom

The unit delivers 300 W total output with a single fan for cooling. It handles a typical motherboard, CPU and a few drives, but leaves little margin for high-wattage graphics cards or large drive arrays.

Connector layout

Cabling includes one 20+4-pin ATX, one 4-pin ATX12V, three SATA, two peripheral and one floppy connector. Builds requiring additional PCIe power or more SATA leads will need adapters or a different supply.

How it compares

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

Price $56.99
Cheaper than about 87% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Brand nameReplace Power
Model nameAP-MPS3ATX30-7
Product colorGrey
Product typeATX
More details
Fan configuration1

Questions about this item

Will the 20+4-pin ATX connector on this AP-MPS3ATX30-7 fit the motherboard in my older Dell PowerEdge SC430?

Yes, the 20+4-pin ATX connector is designed for the Dell PowerEdge SC430 and SC440 motherboards, providing the standard ATX power interface those systems require.

How can I confirm the 300W unit is delivering stable power once installed?

The supply includes output over-voltage protection and low ripple and noise ratings; a successful POST and stable operation under load indicate it is working as intended.

Which power cables come attached to the PSU and what might I need to add?

The unit provides a fixed 20+4-pin ATX cable, a 4-pin ATX12V cable, two peripheral connectors, one floppy connector and three SATA power connectors; no modular cables are included.

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