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Rectangular ATX power supply unit in matte black finish with cooling fan visible on one side

KHACHIMO

KHACHIMO 255W 80 PLUS Gold ATX Power Supply

SKU CH-Z9N5-EKNQY

An 80 PLUS Gold ATX unit delivering 255 W with Modern Standby support, zero-RPM fan mode and resonant LLC plus DC-to-DC topology for quiet, efficient power

  • TypeATX
  • Fast wake-from-sleep with Modern Standby support
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Fan stays off at low loads for silent running
  • Resonant LLC plus DC-to-DC delivers clean power
  • 255 W ATX unit fits 3020, 7020, 9020 systems

Compatible Dell Workstations

This 255W ATX power supply replaces Dell part numbers 3020 7020 9020 L255AS-00 AC255ES-00/01 D255AS-00 D255ES-00 L255ES-00 AC255AS-00. It fits small-form-factor Dell OptiPlex and Precision workstations that require this specific PSU form factor and connector layout. It is not for builders needing a standard ATX unit for custom cases or higher-wattage configurations.

Verify Dell Part Number and Case Fit

Before ordering confirm your Dell service tag matches one of the listed part numbers because Dell SFF chassis use a proprietary PSU shape and mounting tabs. Check that your current unit carries one of the exact codes above; a mismatched unit will not align with the rear bracket or the motherboard power connectors. This unit is not for systems requiring a larger PSU or different pin-out.

80 PLUS Gold Efficiency and Quiet Operation

The 80 PLUS Gold certification means high efficiency at typical loads reducing heat and electricity use. Zero RPM fan mode stops the fan completely at low and medium loads for silent running while Resonant LLC topology with DC-to-DC conversion delivers stable voltage and low coil whine. Modern Standby support enables fast wake times and deeper sleep states for office workflows.

Puntos fuertes

  • Fast wake-from-sleep with Modern Standby support
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Fan stays off at low loads for silent running
  • Resonant LLC plus DC-to-DC delivers clean power
  • 255 W ATX unit fits 3020, 7020, 9020 systems

Especificaciones

TypeATX

Preguntas sobre este artículo

What cables come in the box with the KHACHIMO 255W unit and do I need to buy any separately?

The supplier lists only the power supply itself; no cables or mounting hardware are mentioned, so check your case and motherboard requirements before ordering.

The title shows 3020, 7020 and 9020 — which one should I pick for my build?

Those codes are Dell OptiPlex chassis references; choose the one that matches your exact system model to ensure the connectors and form factor fit.

What does the 255W rating mean when the supply is running inside a real PC?

It is the maximum continuous DC output the unit can deliver across all rails while maintaining 80 PLUS Gold efficiency and Zero RPM fan operation at low loads.

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