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Grey ATX power supply unit with single fan

Replace Power

Replace Power AP-MPS3ATX30-25 power supply 300W ATX

SKU CH-D3H0-04HQQ MPN AP-MPS3ATX30-25

300W ATX replacement power supply for Compaq Presario SR1315CL (PP156AAR) with one fan, 20+4-pin, 4-pin CPU, two peripheral, one floppy and three SATA connectors

  • ColorGrey
  • TypeATX
  • Fans1
  • Weight0.1
  • 300 W output powers Compaq Presario SR1315CL systems
  • Single fan cools the 300 W unit quietly
  • 20+4 pin plus 4 pin ATX12V feeds motherboard
  • Three SATA connectors supply drives and peripherals
  • Over-voltage protection guards components against surges

Direct replacement for Compaq Presario SR1315CL

This 300W ATX unit is built as a drop-in replacement for the Compaq Presario SR1315CL (PP156AAR). It fits standard ATX bays and supplies the connectors that the original chassis expects. The grey housing matches the OEM aesthetic for a clean install.

Thermals noise and power draw

A single fan moves air through the chassis while the 300W rating delivers steady output for typical desktop workloads. High-efficiency conversion keeps waste heat low and ripple and noise within tight limits. Over-voltage protection guards connected components during normal operation.

Sustained load behaviour

Under continuous demand the supply maintains its rated wattage without thermal throttling thanks to the efficient topology. The single fan ramps only as needed so acoustic output stays predictable over long sessions. Output rails remain stable so the system stays reliable during extended use.

Highlights

  • 300 W output powers Compaq Presario SR1315CL systems
  • Single fan cools the 300 W unit quietly
  • 20+4 pin plus 4 pin ATX12V feeds motherboard
  • Three SATA connectors supply drives and peripherals
  • Over-voltage protection guards components against surges

Specifications

BrandReplace Power
ModelAP-MPS3ATX30-25
ColorGrey
TypeATX
Fans1
Weight0.1

Questions about this item

How do I install the AP-MPS3ATX30-25, and which connector step do people get wrong?

Mount the unit with its four case screws, plug the 20+4-pin ATX connector fully into the motherboard, then attach the 4-pin ATX12V cable near the CPU socket; the step most often missed is seating that 4-pin CPU power plug completely.

What maintenance or replacement will the AP-MPS3ATX30-25 need later?

The single internal fan is the only moving part; clean dust from its intake grille every few months with compressed air, and replace the whole unit if the fan becomes noisy or stops spinning.

What limit appears first on the AP-MPS3ATX30-25 under sustained load?

The 300 W total output ceiling is the first boundary; continuous draw near that level will trigger over-voltage protection or thermal shutdown before any individual rail hits its own limit.

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