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Grey ATX power supply unit with single fan and multiple cable connectors

Replace Power

Replace Power AP-MPS3ATX30-34 300W ATX power supply

SKU CH-FCV2-34HR3 MPN AP-MPS3ATX30-34

Grey 300 W ATX power supply with one 20+4-pin, one 4-pin ATX12V, two peripheral, one floppy and three SATA connectors for Gateway 310S, 500X, 6500843, 700S, 700X, 700XL and 702GE systems

  • ColorGrey
  • TypeATX
  • Fans1
  • Weight0.1
  • 300W steady output keeps your Gateway desktop running reliably
  • High efficiency design lowers energy waste during daily use
  • Low ripple and noise protects sensitive components from voltage fluctuation
  • Output over-voltage protection guards hardware against power spikes
  • One 20+4-pin ATX, one 4-pin ATX12V, two peripheral, one floppy and three SATA connectors fit the listed Gateway models

Replacement ATX supply for Gateway desktops

This 300W ATX unit replaces the original power module in Gateway 310S, 500X, 6500843, 700S, 700X, 700XL and 702GE systems. It delivers steady output with over-voltage protection and low ripple for reliable daily operation. The grey enclosure houses a single fan for basic cooling. Builders restoring these legacy towers or assembling a low-power ATX box will find a direct mechanical and electrical match.

Connector limits for legacy platforms

The loom provides one 20+4-pin ATX connector, one 4-pin ATX12V connector, two peripheral connectors, one floppy connector and three SATA power connectors. No PCIe or EPS cables are included, so discrete graphics cards and modern multi-core CPUs that demand extra 12V rails cannot be supported. The 300W ceiling also caps total system draw, making the unit unsuitable for builds that exceed this budget.

Upgrading from failed or noisy OEM units

Swapping a dead or whining factory supply with this replacement restores power without rewiring the case. The jump is worth it when the original unit has failed, shows voltage drift or produces audible coil whine under load. It is not for owners who need more than 300W, additional 12V connectors or modular cabling for cable-management upgrades.

Highlights

  • 300W steady output keeps your Gateway desktop running reliably
  • High efficiency design lowers energy waste during daily use
  • Low ripple and noise protects sensitive components from voltage fluctuation
  • Output over-voltage protection guards hardware against power spikes
  • One 20+4-pin ATX, one 4-pin ATX12V, two peripheral, one floppy and three SATA connectors fit the listed Gateway models

Specifications

BrandReplace Power
ModelAP-MPS3ATX30-34
ColorGrey
TypeATX
Fans1
Weight0.1

Questions about this item

Which capacity fits a Gateway 310S or 700X?

The 300W unit matches the original spec for the Gateway 310S, 500X, 700S, 700X, 700XL and 702GE systems listed.

What does the 300W rating deliver inside the case?

It provides a steady 300W stream to the motherboard, CPU and drives so the PC boots and runs without power-related shutdowns.

What connectors come on the ATX unit and what do they support?

One 20+4-pin ATX, one 4-pin ATX12V, two peripheral, one floppy and three SATA power connectors for drives and motherboard.

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