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

DELL Refurbished

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

  • Max wattage305 W
  • SATA power connectors4
  • Supply voltage100–240 V
  • AC input frequency50/60 Hz
  • Rated input current5A
  • Connection types1 × 24-Pin ATX Connector 4 x SATA Power Connectors 1 x Flopp
  • 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.

How it compares

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

Price $33.99
Cheaper than about 94% of the 10,869 comparable items (median $142.99).
Max wattage 305 W
Lower than about 92% of the 930 comparable items (median 850 W).

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Specifications

Product
Brand nameDELL
Model nameWU133
Product typeATX
Ports & slots
SATA power connectors4
Connection types1 × 24-Pin ATX Connector
4 x SATA Power Connectors
1 x Floppy Power Connector
1 × 4-Pin ATX power Connector
Power
Max wattage305 W
Supply voltage100–240 V
AC input frequency50/60 Hz
Rated input current5A
Size & build
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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