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Rectangular silver ATX power supply unit with fan grille visible

KHACHIMO

KHACHIMO 275W ATX power supply 80 PLUS Gold

SKU CH-EX20-8XYZ0

ATX power supply delivering 275 W with 80 PLUS Gold efficiency, Modern Standby support, zero-RPM fan mode and resonant LLC DC-to-DC topology for quiet, stable power

  • TypeATX
  • Modern Standby support enables rapid wake from sleep
  • 80 PLUS Gold certification reduces power draw and heat
  • Zero RPM fan mode stops the fan at low loads
  • LLC resonant topology with DC-to-DC conversion delivers stable voltage and cuts coil whine
  • 275 W ATX output powers compatible desktops and workstations

Compatibility List and Form Factor

This 275W ATX power supply is designed as a direct replacement for a wide range of Dell OptiPlex and Precision workstations, matching part numbers such as 390, 790, 990, 3010, 7010, 9010, L275EM-00, B275AM-00, AC275AM-00, and H275AM-00. It serves IT departments and home users who need a standard ATX unit to restore or maintain these specific desktop systems.

Installation Notes

The unit follows the standard ATX layout, so it fits the existing mounting points and uses the native connector set for the listed models without adapters. Care is needed when routing the fixed cables inside compact chassis, and the 275W ceiling means the supply cannot support high-end graphics cards or heavily overclocked processors.

Sustained Load Behaviour

Resonant LLC topology with DC-to-DC conversion delivers clean, consistent power during extended workloads, reducing coil whine and supporting efficient sleep states. The 80 PLUS Gold rating keeps efficiency high under continuous draw, while the Zero RPM fan mode remains inactive at higher loads to provide active cooling when temperatures rise.

Points forts

  • Modern Standby support enables rapid wake from sleep
  • 80 PLUS Gold certification reduces power draw and heat
  • Zero RPM fan mode stops the fan at low loads
  • LLC resonant topology with DC-to-DC conversion delivers stable voltage and cuts coil whine
  • 275 W ATX output powers compatible desktops and workstations

Caractéristiques

TypeATX

Questions sur cet article

How do I confirm the power supply is operating correctly after installation?

The 80 PLUS Gold certification and Zero RPM Fan Mode mean the fan stays off at low and medium loads, so silent operation under light use shows it is working as intended.

What cables and accessories come with the unit, and what must be sourced separately?

The package includes the L275EM-00 power supply; mounting screws and any extra modular cables required for specific components need to be purchased separately.

Which of the listed model codes — L275EM-00, 084J9Y, B275AM-00, AC275AM-00, H275AM-00 — should I choose for my build?

All codes refer to the same 275 W ATX unit with 80 PLUS Gold efficiency, Modern Standby support and Zero RPM fan mode; pick the code that matches your system’s part list.

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