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Grey ATX power supply unit with single fan and standard connectors

Replace Power

Replace Power AP-MPS3ATX30-31 300W ATX power supply

SKU CH-PMM7-YBPWG MPN AP-MPS3ATX30-31

A 300W ATX power supply with one fan delivering steady power via 20+4-pin ATX, 4-pin ATX12V, two peripheral, one floppy and three SATA connectors

  • Fan configuration1
  • Product colorGrey
  • Product typeATX
  • Product weight0.1
  • Delivers 300W steady output for reliable system operation
  • Single fan design keeps temperatures controlled during use
  • Includes three SATA power connectors for storage drives
  • Provides 20+4-pin ATX and 4-pin ATX12V for motherboard compatibility
  • Grey ATX form factor fits standard desktop chassis

300 W ATX replacement unit

This 300 W ATX power supply replaces the PowerMan Sparkle FSP FSP300-60PFN. It fits standard desktop chassis and supplies a steady 300 W for general office or home systems. The grey enclosure holds a single fan for basic cooling. Builders restoring older PCs or needing a direct swap will find it a straightforward fit.

Connector limits for legacy builds

The unit provides one 20+4-pin ATX connector, one 4-pin ATX12V connector, two peripheral connectors, one floppy connector and three SATA power connectors. Modern graphics cards requiring 6-pin or 8-pin PCIe power cannot be supported. Systems with multiple drives may exhaust the available SATA leads. The 4-pin CPU connector limits compatibility with newer motherboards that expect an 8-pin EPS plug.

Capacity headroom for light workloads

At 300 W the supply comfortably runs integrated graphics, a single mechanical drive and basic peripherals. Adding a discrete GPU, several storage devices or a high-wattage CPU will exceed the rated output. The three SATA connectors handle a modest drive count, while the two peripheral plugs serve older accessories. Over-voltage protection helps guard components during transient spikes.

How it compares

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

Price $55.99
Cheaper than about 88% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Brand nameReplace Power
Model nameAP-MPS3ATX30-31
Product colorGrey
Product typeATX
More details
Fan configuration1

Questions about this item

What power rating does this Replace Power unit deliver?

It provides a continuous 300W output suitable for standard desktop systems.

What does the 300W rating mean for daily use?

It supplies enough steady power for typical office or home PCs with integrated graphics.

Which ATX connector versions are included?

One 20+4-pin main connector and one 4-pin ATX12V connector for the motherboard.

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