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Grey ATX power supply unit with single fan

Replace Power

Replace Power AP-MPS3ATX30-12 300 W ATX power supply for Dell Inspiron 518 537 545

SKU CH-T9B5-KVD9F MPN AP-MPS3ATX30-12

300 W ATX unit with 20+4-pin, 4-pin CPU, three SATA, two peripheral and one floppy connector for Dell Inspiron 518, 537, 545

  • ColorGrey
  • TypeATX
  • Fans1
  • Weight0.1
  • Direct-fit replacement for Dell Inspiron 518 537 545
  • 300 W steady output powers typical desktop builds
  • High efficiency with low ripple and noise
  • Over-voltage protection guards connected components
  • Full connector set: 20+4 ATX, 4-pin CPU, three SATA, peripheral, floppy

Direct replacement for Dell Inspiron 518 537 545

This 300 W ATX unit replaces the original power supply in Dell Inspiron 518 537 and 545 desktops. It delivers the standard voltages those systems expect without modification. The grey enclosure fits the existing chassis mounting points. Builders restoring or repairing these models can install it directly.

ATX connector set limits expansion

The harness provides one 20+4 pin ATX connector, one 4 pin ATX12V connector, two peripheral connectors, one floppy connector and three SATA power connectors. No PCIe power leads are present so discrete graphics cards requiring auxiliary power cannot be used. The fixed cable count also restricts the number of drives and peripherals that can be powered simultaneously.

Single fan cooling in a compact frame

A single fan handles thermal management for the 300 W output. The lightweight construction at 0.1 kg eases handling during installation. Standard ATX screw spacing aligns with common chassis mounts. Grey finish matches typical office chassis aesthetics. The connector mix reflects the needs of legacy Dell workstations rather than modern high-density builds.

Points forts

  • Direct-fit replacement for Dell Inspiron 518 537 545
  • 300 W steady output powers typical desktop builds
  • High efficiency with low ripple and noise
  • Over-voltage protection guards connected components
  • Full connector set: 20+4 ATX, 4-pin CPU, three SATA, peripheral, floppy

Caractéristiques

BrandReplace Power
ModelAP-MPS3ATX30-12
ColorGrey
TypeATX
Fans1
Weight0.1

Questions sur cet article

Should I pick this 300 W unit or a higher-wattage model for my Dell Inspiron 518?

Choose this 300 W unit if your Dell Inspiron 518, 537 or 545 originally shipped with a 300 W supply; it matches the factory rating and connector layout.

What does the 300 W rating deliver inside my Inspiron 537?

It provides up to 300 W of steady power across the 20+4-pin ATX, 4-pin ATX12V, two peripheral, one floppy and three SATA connectors for the original components.

Will the ATX 20+4-pin and 4-pin ATX12V connectors fit my Inspiron 545 motherboard?

Yes, the 20+4-pin ATX and 4-pin ATX12V connectors match the standard ATX layout used in the Inspiron 518, 537 and 545 boards.

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