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Grey ATX power supply unit with single fan and multiple cables

Replace Power

Replace Power AP-MPS3ATX30-11 300W ATX power supply

SKU CH-RK4K-ZTRKE MPN AP-MPS3ATX30-11

300W ATX replacement unit with 20+4-pin, 4-pin, three SATA, two peripheral and one floppy connector

  • ColorGrey
  • TypeATX
  • Fans1
  • Weight0.1
  • Delivers 300W steady power for reliable system operation
  • High efficiency design reduces energy waste and heat output
  • Low ripple and noise protects sensitive components from instability
  • Output over-voltage protection safeguards hardware against power surges
  • Includes 20+4-pin ATX, 4-pin ATX12V, three SATA, two peripheral and floppy connectors

Replacement for Bestec ATX-250-12Z and ATX-300-12E

This 300W ATX power supply from Replace Power is a direct replacement for Bestec ATX-250-12Z Rev D3R and ATX-300-12E Rev D1R units. It fits standard ATX cases and suits owners of compatible Dell, HP and other desktop systems needing a reliable swap. The grey unit weighs 0.1 kg and includes a single fan for cooling.

ATX connector set with SATA power

The unit provides one 20+4-pin ATX connector, one 4-pin ATX12V connector, three SATA power connectors, two peripheral connectors and one floppy drive connector. This layout covers motherboard, CPU, multiple drives and legacy devices in one harness. It frees the builder from sourcing adapter cables when refreshing an older chassis.

300W steady output with protection features

The supply delivers 300W of continuous power with high efficiency and low ripple and noise. Output over-voltage protection guards connected components during faults. It handles typical office and home desktop loads but will not support power-hungry discrete graphics cards or multi-drive server configurations.

Points forts

  • Delivers 300W steady power for reliable system operation
  • High efficiency design reduces energy waste and heat output
  • Low ripple and noise protects sensitive components from instability
  • Output over-voltage protection safeguards hardware against power surges
  • Includes 20+4-pin ATX, 4-pin ATX12V, three SATA, two peripheral and floppy connectors

Caractéristiques

BrandReplace Power
ModelAP-MPS3ATX30-11
ColorGrey
TypeATX
Fans1
Weight0.1

Questions sur cet article

What is the first limit that appears during sustained full-load operation?

The 300 W total output cap is reached before any connector-specific limit.

How loud and hot does the unit get when running all day?

A single fan provides cooling; high-efficiency design and low ripple keep temperatures moderate during continuous use.

Which existing cables or connectors must the system already have for this supply to work?

Motherboard with 20+4-pin ATX and 4-pin ATX12V sockets, plus drives using SATA, peripheral or floppy power plugs.

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