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Rectangular silver metal power supply unit with fan grille and multiple cable connectors

WMtec

WMtec 255W Server Power Supply for DELL OptiPlex 3020 7020 9020 SFF

SKU CH-EDMZ-PS1H6

A 255 watt replacement power supply for Dell OptiPlex 3020, 7020 and 9020 small form factor desktops

  • Delivers 255W to OptiPlex 3020 7020 9020 SFF
  • Compact 240 62 72mm fits small-form-factor chassis
  • Motherboard 8-pin CPU 4-pin GPU 6-pin connectors included
  • Replaces L255AS-00 AC255AS-00 AC255ES-00 HU255ES-00 D255AS-00
  • New condition ready for immediate installation

Compatible Dell OptiPlex SFF Models

This 255W power supply is built for DELL OptiPlex 3020, 7020 and 9020 small form factor desktops. It replaces part numbers L255AS-00, AC255AS-00, AC255ES-00, HU255ES-00 and D255AS-00. The unit is new and designed specifically for these Dell SFF chassis.

Proprietary Connector Layout

The unit provides a motherboard 8-pin connector, a CPU 4-pin connector and a graphics card 6-pin connector. This dedicated Dell pin-out differs from standard ATX layouts, so the power supply will not fit systems that require a conventional 24-pin main connector or different peripheral plugs.

Thermals And Power Draw

Rated at 255W, the supply delivers its full output within the compact 240 by 62 by 72 mm housing. The internal fan moves air through the small chassis to maintain stable temperatures during typical office workloads. Acoustic output remains low enough for quiet desktop environments.

Highlights

  • Delivers 255W to OptiPlex 3020 7020 9020 SFF
  • Compact 240 62 72mm fits small-form-factor chassis
  • Motherboard 8-pin CPU 4-pin GPU 6-pin connectors included
  • Replaces L255AS-00 AC255AS-00 AC255ES-00 HU255ES-00 D255AS-00
  • New condition ready for immediate installation

Specifications

No published specifications for this item yet.

Questions about this item

What does the 255W rating mean once the unit is installed in a DELL OptiPlex 3020 7020 9020 SFF?

The 255W rating is the maximum continuous power the supply can deliver to the motherboard, CPU and graphics connectors inside the SFF chassis.

Which power connectors does the L255ES-00 provide and what do they limit?

It provides an 8-pin motherboard connector, a 4-pin CPU connector and a 6-pin graphics connector, defining which components can be powered.

Will the 240 x 62 x 72 mm dimensions fit the DELL OptiPlex 3020 7020 9020 SFF case?

Yes, the 240 x 62 x 72 mm form factor matches the small-form-factor chassis used by those OptiPlex models.

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