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Rectangular metal ATX power supply unit with fan grille and cable bundle

DELL

DELL WU133 305 W ATX power supply

SKU CH-EHAK-K261G MPN WU133

Refurbished 305 W ATX unit with 24-pin, four SATA, floppy and 4-pin connectors for Optiplex and PowerEdge systems

  • TypeATX
  • Maximum Power305 W
  • SATA Power Connector4
  • Input Voltage100 - 240 V
  • Input Frequency Range50/60 Hz
  • Input Current5A
  • 305 W output powers OptiPlex 320, 330, 360, 580, 740, 745, 755, 760, 960
  • 100-240 V 50/60 Hz input handles global mains without a switch
  • Four SATA power connectors feed multiple drives in compatible systems
  • 24-pin ATX plus 4-pin CPU and floppy connectors match legacy Dell boards
  • Refurbished Dell WU133 unit tested for reliable replacement in listed desktops

305 W ATX supply for Dell OptiPlex and PowerEdge

This 305 W ATX power supply carries Dell part number WU133 and is built to fit specific OptiPlex and PowerEdge chassis. It accepts 100-240 V input at 50/60 Hz and delivers power through a 24-pin ATX connector, a 4-pin ATX connector, four SATA connectors and a floppy connector. The unit is sold in refurbished condition.

Suits owners of listed Dell desktops.

The supply matches the pin-out and mounting of OptiPlex 320, 330, 360, 580, 740, 745, 755, 760, 960, Dimension 5200, E520, E521 and PowerEdge SC, T100 and T105 systems. Builders using standard ATX cases or motherboards with different connector layouts should look elsewhere because the wiring and bracket are proprietary to those Dell models.

305 W maximum output

The 305 W rating is the single figure that determines whether this unit can support the installed components. If the combined draw of the CPU, drives and expansion cards exceeds this limit, the supply will not be adequate.

Highlights

  • 305 W output powers OptiPlex 320, 330, 360, 580, 740, 745, 755, 760, 960
  • 100-240 V 50/60 Hz input handles global mains without a switch
  • Four SATA power connectors feed multiple drives in compatible systems
  • 24-pin ATX plus 4-pin CPU and floppy connectors match legacy Dell boards
  • Refurbished Dell WU133 unit tested for reliable replacement in listed desktops

Specifications

BrandDELL
ModelWU133
TypeATX
Maximum Power305 W
SATA Power Connector4
Input Voltage100 - 240 V
Input Frequency Range50/60 Hz
Input Current5A
Connectors1 x 24-Pin ATX Connector
4 x SATA Power Connectors
1 x Floppy Power Connector
1 x 4-Pin ATX power Connector
FeaturesCompatible Systems: Optiplex: 320, 330, 360, 580, 740, 740 MLK, 745, 745c, 760, 755, 960/ Dimension: 5200, E520, E521/ PowerEdge: SC, T100, T105
Shipping weight1.81 kg
Package size432 × 305 × 102 mm

Questions about this item

Will the 24-pin ATX connector on the WU133 fit the motherboard in my Optiplex 760?

The WU133 provides a 24-pin ATX connector and is listed as compatible with the Optiplex 760, so it will connect directly to that motherboard.

How can I confirm the unit is delivering stable power after installation?

After fitting the WU133, the system should power on reliably and run without unexpected shutdowns under normal load.

Does the box include the four SATA power cables needed for my drives?

The WU133 has four SATA power connectors built into its cable harness, so no separate SATA power cables are required.

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