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Rectangular ATX power supply unit in matte black metal finish

KHACHIMO

KHACHIMO HF55W-DE-L 55W ATX power supply

SKU CH-QBPQ-KYWCK

A 55W ATX power supply with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support for silent, low-power operation

  • TypeATX
  • Faster wake from sleep with Modern Standby support
  • Lower power draw and heat via 80 PLUS Gold efficiency
  • Near-silent operation as fan stops at low loads
  • Clean, stable power from resonant LLC with DC-to-DC
  • Reduced coil whine for quieter overall performance

55W ATX power supply with Gold efficiency

The KHACHIMO HF55W-DE-L is a 55W ATX power supply built for systems that prioritise low power draw and quiet operation. It carries 80 PLUS Gold certification and uses a resonant LLC topology with DC-to-DC conversion to deliver clean, consistent power. Modern Standby compatibility enables extremely fast wake-from-sleep times and improved low-load efficiency. A zero RPM fan mode stops the cooling fan entirely at low and medium loads for near-silent running.

Suited to compact or low-power builds needing Gold

This unit suits builders assembling compact or low-power systems that benefit from Gold-rated efficiency and silent low-load operation. Modern Standby support makes it a good match for PCs that spend long periods in sleep states. Buyers who want more storage or multiple high-draw graphics cards should look elsewhere, as the 55W limit cannot sustain heavy multi-component configurations.

Sustained load behaviour with fan-off capability

Under sustained load the resonant LLC topology with DC-to-DC conversion maintains clean power delivery and reduces coil whine. The zero RPM fan mode keeps the fan stopped through low and medium loads, so noise stays minimal until higher thermal demands require active cooling. Gold-rated efficiency helps limit waste heat during continuous operation, supporting cooler internal temperatures over long sessions.

Highlights

  • Faster wake from sleep with Modern Standby support
  • Lower power draw and heat via 80 PLUS Gold efficiency
  • Near-silent operation as fan stops at low loads
  • Clean, stable power from resonant LLC with DC-to-DC
  • Reduced coil whine for quieter overall performance

Specifications

TypeATX

Questions about this item

What motherboard power connectors does the HF55W-DE-L require to function?

The unit is an ATX power supply, so it needs a standard 24-pin ATX connector and a CPU power connector from the motherboard to operate.

Will the 55 W output and Modern Standby support work with an older board that lacks low-power sleep states?

Yes, the 55 W ATX supply powers legacy boards normally; Modern Standby features simply remain inactive on hardware that does not support them.

How can I confirm the Zero RPM Fan Mode is active after installation?

Under light or medium load the cooling fan stops completely, so silent operation at the desk indicates the mode is working as intended.

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