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

KHACHIMO

KHACHIMO 320W ATX Power Supply AC320EM-01

SKU CH-JQ71-ZAZET

A 320 W ATX power supply with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support for compatible Dell OptiPlex systems

  • TypeATX
  • Modern Standby support enables extremely fast wake-from-sleep times
  • 80 PLUS Gold certification delivers high efficiency for lower power consumption and cooler operation
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent running
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine
  • 320 W ATX output fits Dell OptiPlex 390, 790, 990 and 3010 systems

Direct Replacement for Dell OptiPlex

This 320W ATX power supply is built as a direct replacement for Dell OptiPlex 390, 790, 990, 3010 and 320 systems. It matches the original AC320EM-01, AC265AM-00, H265AM-00, AC275AM-00, H275AM-00 and L275AM-00 part numbers. Buyers needing higher wattage for discrete graphics upgrades or non-Dell chassis should look elsewhere.

320 Watt Output and 80 PLUS Gold

The unit delivers a maximum of 320 watts and carries 80 PLUS Gold certification for high efficiency at typical loads. Modern Standby compatibility enables extremely fast wake-from-sleep times and better low-load efficiency. Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine.

Standard ATX Fit with Zero RPM Fan

Installation follows the standard ATX form factor used in the listed OptiPlex models; the unit slides into the chassis and connects with the existing cables. Zero RPM fan mode stops the fan completely at low and medium loads for near-silent operation. The proprietary Dell pin-out is already matched, so no adapter cables are required.

Puntos fuertes

  • Modern Standby support enables extremely fast wake-from-sleep times
  • 80 PLUS Gold certification delivers high efficiency for lower power consumption and cooler operation
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent running
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine
  • 320 W ATX output fits Dell OptiPlex 390, 790, 990 and 3010 systems

Especificaciones

TypeATX

Preguntas sobre este artículo

What does the 320 W rating mean for my OptiPlex 390 790 990 3010?

It matches the original power budget so the motherboard, CPU and drives receive the same wattage the system was designed for.

What does the ATX type tell me about connector compatibility?

It uses the standard ATX pin-out so the 24-pin main and 4-pin CPU plugs fit the OptiPlex motherboard without adapters.

Will this unit screw into the OptiPlex 390 790 990 3010 chassis?

Yes, it shares the AC320EM-01 form factor used across those models so the mounting holes line up exactly.

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