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Compact silver 1U ATX power supply unit with rear fan grille

KHACHIMO

KHACHIMO ITX NAS 1U M41 K39 400W 500W Power Supply DPS-400AB-17B

SKU CH-AWSZ-Z7C7F

Compact 1U ATX power supply rated 400 W with 500 W peak, 80 PLUS Gold efficiency and zero-RPM fan mode for silent low-load operation

  • TypeATX
  • Modern Standby support gives extremely fast wake-from-sleep times
  • 80 PLUS Gold certification delivers high efficiency for lower power consumption
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent operation
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine
  • Rated 400W continuous with 500W peak capacity for ITX NAS builds

Compact 1U Power Supply for ITX NAS Builds

This new KHACHIMO unit fits the DPS-400AB-17B form factor and delivers a rated 400 W with a 500 W peak. It uses an ATX-type design inside a 1U chassis, making it suitable for small-footprint network-attached storage servers. The 80 PLUS Gold certification and Modern Standby support ensure efficient, responsive operation.

Ideal for Low-Profile Servers, Not Full-Size Towers

Builders assembling a compact NAS or 1U rack appliance will benefit from the Zero RPM fan mode and resonant LLC topology with DC-to-DC conversion. The unit is not suited for standard ATX cases or high-wattage multi-GPU workstations that require greater power headroom or standard PS/2 dimensions.

400 W Rated Output with 500 W Peak

The single figure that determines compatibility is the 400 W continuous rating backed by a 500 W peak. Verify that your total system draw stays within this limit before purchasing.

Highlights

  • Modern Standby support gives extremely fast wake-from-sleep times
  • 80 PLUS Gold certification delivers high efficiency for lower power consumption
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent operation
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine
  • Rated 400W continuous with 500W peak capacity for ITX NAS builds

Specifications

TypeATX

Questions about this item

Does the fan in this DPS-400AB-17B unit need periodic replacement?

The Zero RPM Fan Mode keeps the fan off at low and medium loads, reducing wear; when it does spin it is a standard 1U cooling fan that can be swapped if it ever becomes noisy.

What limit appears first when this 400W rated supply runs continuously at high load?

The 400W continuous rating is the first ceiling; the 500W peak figure is only for short bursts and cannot be sustained.

How much heat and noise does the 80 PLUS Gold unit produce during all-day operation?

Gold efficiency lowers waste heat, and the Zero RPM Fan Mode silences the fan entirely at low and medium loads, so a typical ITX NAS stays cool and near-silent.

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