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Black rectangular ATX power supply unit with gold certification badge visible

KHACHIMO

KHACHIMO 550W ATX Power Supply 80 PLUS Gold Zero RPM Fan Modern Standby

SKU CH-A8X0-65NHC

An 80 PLUS Gold ATX power supply with Zero RPM fan mode and Modern Standby compatibility for silent, efficient operation

  • TypeATX
  • Near-instant wake from sleep with Modern Standby support
  • Lower power draw and cooler running via 80 PLUS Gold efficiency
  • Silent low-load operation thanks to Zero RPM fan mode
  • Clean, stable power delivery from resonant LLC with DC-to-DC conversion
  • Reduced coil whine for quieter system operation

550W ATX PSU for legacy Sun servers

This 550W ATX power supply is built as a direct replacement for the POWER-ONE Sun X4200 and Netra T2000 platforms using part numbers X8051A-Z and SPDSUNM-02. It delivers 80 PLUS Gold efficiency for lower consumption and cooler running. The unit is new and ready for immediate deployment in compatible enterprise hardware.

Suits maintainers of X4200 or T2000 systems

It is intended for technicians restoring or servicing these specific Sun servers. Builders assembling modern desktop PCs, workstations or generic ATX chassis should look elsewhere because the connector layout and form factor are tailored to the original OEM design.

Drop-in fit for the original chassis

Installation follows the original mounting points and wiring harness, so no adapter cables or case modifications are required. The Zero RPM fan mode stops the fan at low and medium loads, while the resonant LLC topology with DC-to-DC conversion minimises coil whine. Modern Standby support enables faster wake-from-sleep transitions.

Highlights

  • Near-instant wake from sleep with Modern Standby support
  • Lower power draw and cooler running via 80 PLUS Gold efficiency
  • Silent low-load operation thanks to Zero RPM fan mode
  • Clean, stable power delivery from resonant LLC with DC-to-DC conversion
  • Reduced coil whine for quieter system operation

Specifications

TypeATX

Questions about this item

Which motherboard power connectors does the 550W unit need to be compatible with my board?

The supply uses standard ATX main and CPU connectors, so any board with a 24-pin ATX socket and a 4- or 8-pin CPU socket will work.

Will the Zero RPM fan mode still engage when the PSU powers legacy components such as the Sun X4200 or Netra T2000?

Yes, fan behaviour depends only on load level, not on the age of the attached hardware, so older systems still benefit from silent operation at low and medium loads.

How can I verify the 80 PLUS Gold efficiency is active after installation?

Use software that reports PSU input and output power; a Gold-certified unit should show 80-plus percent efficiency at typical loads, confirming the rating.

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