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Silver rectangular 1U ATX power supply with fan grille and cable bundle

KHACHIMO

KHACHIMO HK354-11UEP 250W 80 PLUS Gold ATX power supply

SKU CH-QWB4-2V210

A 250W ATX power supply built for NAS and POS 1U systems with 80 PLUS Gold efficiency, Modern Standby support and a Zero RPM fan mode for silent low-load operation

  • TypeATX
  • Faster wake from sleep with Modern Standby support
  • High efficiency cuts power draw and heat with 80 PLUS Gold
  • Silent running at low loads via Zero RPM fan mode
  • Clean, stable power delivery through LLC resonant topology with DC-to-DC conversion
  • Quieter operation thanks to reduced coil whine from resonant LLC design

250W ATX supply for compact systems

The KHACHIMO HK354-11UEP is a 250W ATX power supply built for small-form-factor PCs, NAS units and POS terminals. Its 80 PLUS Gold certification delivers high efficiency, reducing power draw, heat and fan noise. Modern Standby compatibility enables extremely fast wake-from-sleep times and better low-load efficiency. A resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine.

Check form factor and power budget

Verify that your chassis accepts a 1U switching supply and that the 250W rating covers the combined load of your CPU, drives and expansion cards. Confirm the motherboard uses a standard ATX power connector layout. Ensure the physical dimensions match the available space in your enclosure before ordering.

Replaces louder or less efficient units

This supply replaces older PSUs that lack Modern Standby support, Gold-level efficiency or a Zero RPM fan mode. The jump is worthwhile when you need near-silent operation at low and medium loads, cleaner power delivery for sensitive components, and lower energy costs in always-on deployments.

Points forts

  • Faster wake from sleep with Modern Standby support
  • High efficiency cuts power draw and heat with 80 PLUS Gold
  • Silent running at low loads via Zero RPM fan mode
  • Clean, stable power delivery through LLC resonant topology with DC-to-DC conversion
  • Quieter operation thanks to reduced coil whine from resonant LLC design

Caractéristiques

TypeATX

Questions sur cet article

Does the HK354-11UEP include mounting screws and a power cord or must they be purchased separately?

The unit ships as a 1U ATX power supply; mounting hardware and a mains cable are not included and must be sourced separately.

Which capacity should I choose for a compact NAS or POS build that needs Modern Standby support?

The single 250 W 80 PLUS Gold model with LLC resonant topology and DC-to-DC conversion is the only version offered and fits that use case.

What does the 250 W 80 PLUS Gold rating mean for daily power draw and heat in a small chassis?

At typical loads the supply runs above 80 % efficiency, so waste heat and fan noise stay low, and the Zero RPM mode keeps it silent during light work.

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