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Grey ATX power supply unit with single fan

Replace Power

Replace Power AP-MPS3ATX30-10 300W ATX power supply

SKU CH-7H37-36C2Z MPN AP-MPS3ATX30-10

A 300W ATX power supply with 20+4 pin, 4-pin CPU, three SATA, two peripheral and one floppy connector for Dell Dimension 8300 and compatible systems

  • Fan configuration1
  • Product colorGrey
  • Product typeATX
  • Product weight0.1
  • Delivers 300W steady output for reliable system power
  • Low ripple and noise ensures clean voltage delivery
  • Over-voltage protection safeguards connected components from surges
  • 20+4-pin ATX and 4-pin ATX12V connectors fit modern motherboards
  • Three SATA power connectors support multiple storage drives

Direct replacement for Dell Dimension 8300

This 300W ATX power supply is a direct replacement for the Dell Dimension 8300 and matches Dell part GH5P9 or HP-P3017F3. It delivers steady power for repairing an older desktop or using the unit in a basic system build. The grey chassis houses a single fan and weighs 0.1 kg.

Verify connector fit before ordering

Check that your motherboard accepts the 20+4-pin ATX connector and the 4-pin ATX12V connector. Ensure the case can accommodate a standard ATX form factor and that the existing wiring reaches the two peripheral connectors, one floppy connector and three SATA connectors supplied.

Grey steel enclosure with single fan

The grey steel enclosure uses one fan for cooling and includes over-voltage protection with low ripple and noise output. Fixed cables mean you route only the connectors you need, keeping the interior tidy during daily operation.

How it compares

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

Price $65.99
Cheaper than about 81% 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 nameAP-MPS3ATX30-10
Product colorGrey
Product typeATX
More details
Fan configuration1

Questions about this item

What cables come with the Replace Power AP-MPS3ATX30-10 and what must I source separately?

The unit includes one 20+4-pin ATX connector, one 4-pin ATX12V connector, two peripheral connectors, one floppy connector and three SATA connectors; any additional cables required by your build must be purchased separately.

The listing mentions Dell Dimension 8300 and part numbers GH5P9 and HP-P3017F3 — which version should I pick for those systems?

This single model AP-MPS3ATX30-10 is the direct replacement for Dell Dimension 8300 and the listed Dell and HP part numbers; no alternative capacity or version exists in this range.

What does the 300W rating actually deliver inside a working PC?

The 300W rating means the supply can provide up to 300 watts of continuous power to the motherboard, drives and peripherals through its ATX, ATX12V, peripheral, floppy and SATA connectors.

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