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Silver 1U ATX power supply unit with rear fan grille and side label

KHACHIMO

KHACHIMO AIO HTPC FLEX Small 1U K39 400W Switching Power Supply DPS-400AB-17A

SKU CH-0DZP-TCQYZ

A 400 W ATX power supply with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support for silent, low-power operation

  • TypeATX
  • Fast wake from sleep with Modern Standby support
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Fan stays off at low loads for silent running
  • LLC resonant topology with DC-to-DC delivers clean power
  • 400 W ATX supply fits 1U K39 HTPC flex builds

Compact 1U power for HTPC builds

The KHACHIMO DPS-400AB-17A is a 400 W ATX supply designed for small-form-factor home-theatre PCs and similar space-constrained systems. Its 1U height lets it fit slim chassis where standard units cannot.

80 PLUS Gold sets the efficiency floor

At 80 PLUS Gold certification the unit must reach at least 80 % efficiency at typical loads, reducing waste heat and fan noise. Modern Standby compatibility enables fast wake times and deeper low-power sleep states supported by current operating systems.

400 W ceiling with silent low-load headroom

The 400 W rating covers mainstream CPUs and integrated or entry-level discrete graphics in a compact build. Zero RPM mode stops the fan entirely at low and medium loads, while resonant LLC topology with DC-to-DC conversion keeps voltage stable and coil whine minimal.

Highlights

  • Fast wake from sleep with Modern Standby support
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Fan stays off at low loads for silent running
  • LLC resonant topology with DC-to-DC delivers clean power
  • 400 W ATX supply fits 1U K39 HTPC flex builds

Specifications

TypeATX

Questions about this item

Is this 400W unit the right capacity for a compact 1U FLEX chassis?

Yes, the 400W rating matches the DPS-400AB-17A model built for small-form-factor HTPC and FLEX systems where space is tight.

What does the 80 PLUS Gold badge mean for daily use?

It certifies high efficiency across typical loads, so the PSU draws less power from the wall, runs cooler and keeps fan noise lower.

How does the ATX form factor limit cable routing in a 1U build?

The unit follows the ATX electrical standard but uses a 1U FLEX physical size, so cables exit from the short edge to fit slim enclosures.

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