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Compact 1U silver power supply unit with rear fan grille and power socket

KHACHIMO

KHACHIMO PWS-281-1H 1U 280W-330W power supply

SKU CH-41V6-TM3AF

A 1U ATX power supply delivering 280W to 330W with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support

  • TypeATX
  • Fast wake from sleep with Modern Standby support
  • High efficiency cuts power draw and heat with 80 PLUS Gold
  • Silent operation at low loads via Zero RPM fan mode
  • Clean, stable power delivery using resonant LLC with DC-to-DC
  • Flexible 1U design delivers 280W to 330W output

1U Gold PSU for compact servers

The KHACHIMO PWS-281-1H is a 1U form-factor power supply delivering 280W to 330W for rackmount servers and workstations. It carries 80 PLUS Gold certification and supports Modern Standby for rapid wake times and improved low-load efficiency.

Verify 1U bay and ATX pinout compatibility

Confirm your chassis accepts a 1U high unit and that the motherboard uses standard ATX power connectors. The unit uses a Resonant LLC topology with DC-to-DC conversion to provide stable output and reduced coil whine.

Fits dense builds with silent low-load operation

Zero RPM fan mode stops the fan completely at low and medium loads for near-silent running. The efficient design lowers heat output, freeing thermal headroom in tightly packed enclosures.

Highlights

  • Fast wake from sleep with Modern Standby support
  • High efficiency cuts power draw and heat with 80 PLUS Gold
  • Silent operation at low loads via Zero RPM fan mode
  • Clean, stable power delivery using resonant LLC with DC-to-DC
  • Flexible 1U design delivers 280W to 330W output

Specifications

TypeATX

Questions about this item

Does the KHACHIMO PWS-281-1H come with all necessary cables or must any be purchased separately?

The unit ships as a standalone 1U power supply; any ATX cables required for your build must be sourced separately.

Should I select the 280W or 330W rating for my system?

The same model delivers up to 280W continuous and peaks at 330W; choose based on your components' sustained power draw.

What does the 80 PLUS Gold rating mean for daily operation?

It guarantees high efficiency at typical loads, reducing electricity use, heat output and fan noise during normal use.

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