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KHACHIMO ST-400IS 400W ATX power supply, matte black metal box with rear fan grille and cable bundle

KHACHIMO

KHACHIMO ST-400IS 400W ATX power supply

SKU CH-X10C-QSV8N

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

  • TypeATX
  • Modern Standby delivers ultra-fast wake from sleep
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Zero RPM fan mode keeps the unit silent at low loads
  • Resonant LLC with DC-to-DC conversion ensures clean, stable power
  • 400W ATX output fits compact NAS and HTPC builds

400W ATX Power Supply for Compact Systems

This 400W ATX power supply is built for small-form-factor PCs such as NAS or HTPC units. It carries 80 PLUS Gold certification for high efficiency and lower heat output. Modern Standby support enables extremely fast wake-from-sleep times and improved low-load efficiency. A resonant LLC topology with DC-to-DC conversion delivers clean, consistent power while reducing coil whine.

Suitable for Low-Power Builds Needing Quiet

The unit suits builders who want near-silent performance at typical loads thanks to a Zero RPM fan mode that stops the fan entirely at low and medium loads. It is not intended for configurations that require higher total output or additional power connectors beyond what this design provides. Systems with power-hungry discrete graphics cards or many drives should look at higher-capacity units.

80 PLUS Gold Efficiency Rating

The single specification that decides fit is the 80 PLUS Gold certification, which guarantees high efficiency across the load range for lower power consumption, less noise and cooler temperatures. This rating confirms the supply meets strict efficiency targets without needing to reference any other metric.

Points forts

  • Modern Standby delivers ultra-fast wake from sleep
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Zero RPM fan mode keeps the unit silent at low loads
  • Resonant LLC with DC-to-DC conversion ensures clean, stable power
  • 400W ATX output fits compact NAS and HTPC builds

Caractéristiques

TypeATX

Questions sur cet article

Will the ST-400IS fit the K39, K49, T34, T39, R47, R44, M41, S3, ZS-A4 or G5 chassis I already own?

The unit is listed as compatible with the K39, K49, T34, T39, R47, R44, M41, S3, ZS-A4 and G5 small-form-factor cases.

How can I confirm the Zero RPM fan mode is active after installation?

Under light loads the fan stops completely; you can verify silence at idle and listen for spin-up only when the system draws more power.

Which cables come attached to the ST-400IS and what must I source separately?

The power supply ships with its fixed ATX, CPU and peripheral leads already connected; no modular cables are included or required.

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