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Rectangular metal ATX power supply unit with single fan and multiple cable connectors

Replace Power

Replace Power RPSU-PS-001B power supply 300W ATX

SKU CH-D8HP-04R53 MPN RPSU-PS-001B

ATX power supply delivers 300 W with one 20+4-pin motherboard connector, one 4-pin CPU connector, three peripheral connectors, one floppy connector and three SATA power connectors

  • TypeATX
  • Fans1
  • Weight2
  • Delivers 300W for stable system operation
  • 20+4-pin ATX connector fits most modern motherboards
  • 4-pin ATX12V connector powers CPU reliably
  • Three SATA connectors support multiple drives
  • Over-voltage protection safeguards components

Replacement PSU for Dell Optiplex GX520 GX620

This 300W ATX power supply replaces the original CPB09-001B unit in Dell Optiplex GX520 and GX620 desktops. It fits the standard ATX form factor and includes a single fan for cooling. The unit weighs 2 units and is supplied new.

Connector mix matches legacy Dell builds

The harness provides one 20+4-pin ATX connector, one 4-pin ATX12V connector, three peripheral connectors, one floppy connector and three SATA connectors. This exact combination covers the motherboard, CPU and drive power needs of the target Optiplex models.

Direct swap with no cable adapters needed

Installation is a straight removal of the old unit and insertion of this replacement using the existing mounting points. The only common issue is the short floppy lead, which can be left disconnected if the system has no floppy drive.

Puntos fuertes

  • Delivers 300W for stable system operation
  • 20+4-pin ATX connector fits most modern motherboards
  • 4-pin ATX12V connector powers CPU reliably
  • Three SATA connectors support multiple drives
  • Over-voltage protection safeguards components

Especificaciones

BrandReplace Power
ModelRPSU-PS-001B
TypeATX
Fans1
Weight2

Preguntas sobre este artículo

How much power does the 300W unit actually deliver to a Dell Optiplex GX520 or GX620?

It supplies up to 300W through a 20+4-pin ATX connector, a 4-pin ATX12V connector, three peripheral connectors, one floppy connector and three SATA connectors, matching the original CPB09-001B specification.

What does the ATX form factor limit when installing this PSU?

The ATX layout fixes the mounting hole pattern and the 20+4-pin and 4-pin ATX12V connector positions, so it fits standard ATX cases and motherboards that accept those plugs.

What clearance is needed for the single fan and the unit's weight?

The 2 kg unit uses one internal fan; allow standard ATX depth and rear ventilation space so the fan can exhaust heat without obstruction.

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