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Grey ATX power supply unit with single fan

Replace Power

Replace Power AP-MPS3ATX30-24 300W ATX power supply

SKU CH-NB14-F08KH MPN AP-MPS3ATX30-24

300 W ATX unit with one fan replaces Dell H305E-00 and N305P-05, providing 20+4-pin, 4-pin, three SATA, two peripheral and one floppy connector

  • ColorGrey
  • TypeATX
  • Fans1
  • Weight0.1
  • 300W output delivers steady power for desktop upgrades
  • Single fan provides active cooling in a compact ATX form
  • 20+4 pin and 4 pin ATX12V connectors support standard motherboards
  • Three SATA power connectors supply drives and peripherals
  • Grey finish matches common chassis interiors

Replacement 300W ATX PSU for Dell H305E-00

This 300W ATX power supply replaces the Dell H305E-00 and N305P-05 units. It delivers steady power for compatible desktop systems. The unit suits owners of those specific Dell models needing a direct replacement. It also fits other builds that accept a standard ATX form factor.

Standard ATX connectors simplify installation

The PSU provides one 20+4-pin ATX connector, one 4-pin ATX12V connector, two peripheral connectors, one floppy connector and three SATA power connectors. Match each cable to the corresponding motherboard and drive sockets. Ensure the 4-pin CPU power lead reaches the board without strain. Verify the total draw of attached drives stays within the 300W rating.

300W continuous output under load

The supply is rated for 300W of steady power rather than a short burst. High efficiency and low ripple help maintain stable voltages during sustained workloads. Output over-voltage protection guards connected components if regulation drifts. A single fan cools the unit while it delivers continuous current.

Highlights

  • 300W output delivers steady power for desktop upgrades
  • Single fan provides active cooling in a compact ATX form
  • 20+4 pin and 4 pin ATX12V connectors support standard motherboards
  • Three SATA power connectors supply drives and peripherals
  • Grey finish matches common chassis interiors

Specifications

BrandReplace Power
ModelAP-MPS3ATX30-24
ColorGrey
TypeATX
Fans1
Weight0.1

Questions about this item

How do I verify the 300W Replace Power unit is running correctly after installation?

The system powers on without shutdowns, the single fan spins, and the 20+4-pin ATX plus 4-pin ATX12V rails deliver stable voltage to the motherboard.

Which connectors are included with the AP-MPS3ATX30-24 and what must I source separately?

The box provides one 20+4-pin ATX, one 4-pin ATX12V, two peripheral, one floppy and three SATA power connectors; any additional GPU or specialised cables are not included.

Should I choose the 300W grey ATX model or a different capacity for a Dell H305E-00 N305P-05 replacement?

Select this 300W ATX unit — it matches the original Dell H305E-00 N305P-05 rating and fits the same chassis.

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