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Grey ATX power supply unit with single fan

Replace Power

Replace Power FSP300-ATXPA-5 300 W ATX power supply

SKU CH-APQ7-RGYSP MPN FSP300-ATXPA-5

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

  • Fan configuration1
  • Product colorGrey
  • Product typeATX
  • Product weight0.1
  • Delivers 300 W for stable system operation
  • Single fan provides active cooling during use
  • 20+4-pin ATX connector fits standard motherboards
  • Three SATA power connectors support multiple drives
  • Over-voltage protection safeguards connected components

Replacement PSU for HP Pavilion

The Replace Power FSP300-ATXPA-5 is a 300 W ATX power supply designed as a direct replacement for HP Pavilion a6142n a6120n a6009n systems. It delivers standard ATX power through a grey chassis with a single fan. The unit includes over voltage protection and low ripple and noise output for stable operation.

Check connectors and chassis fit

Verify that your motherboard uses a 20+4-pin ATX connector and a 4-pin ATX12V connector for CPU power. Ensure the case accepts a standard ATX form factor unit and that the single fan orientation matches your airflow path. Confirm the peripheral, floppy and three SATA power connectors match your drive count before ordering.

Upgrades proprietary HP power supplies

This unit replaces the original equipment power modules found in the listed Pavilion models when the factory supply fails or cannot support added drives. The jump is worth it when the existing PSU lacks sufficient SATA connectors or shows signs of voltage instability. It is not for builders who need higher wattage for discrete graphics cards or modern multi-core processors.

How it compares

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

Price $61.99
Cheaper than about 84% of the 10,869 comparable items (median $142.99).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameReplace Power
Model nameFSP300-ATXPA-5
Product colorGrey
Product typeATX
More details
Fan configuration1

Questions about this item

What connectors come with the FSP300-ATXPA-5 and will I need extra cables for SATA drives?

The unit includes one 20+4-pin ATX connector, one 4-pin ATX12V connector, two peripheral connectors, one floppy connector and three SATA power connectors, so most SATA drives can be powered without extra cables.

The supplier title lists HP Pavilion a6142n a6120n a6009n — does this PSU fit all three models?

Yes, the FSP300-ATXPA-5 is described as a replacement upgrade for the HP Pavilion a6142n, a6120n and a6009n.

What does the 300 W rating mean for a typical desktop build?

The 300 W rating is the maximum continuous output the supply can deliver across its rails, suitable for basic office or legacy systems with modest graphics and storage.

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