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

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.