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KHACHIMO 1U ATX power supply unit, matte metal finish

KHACHIMO

KHACHIMO 1U 300W/400W ATX Power Supply SO-340U SO-3400U

SKU CH-4MFF-3VSZ3

1U ATX power supply rated 300 W with 400 W peak, 80 PLUS Gold efficiency, zero-RPM fan mode and resonant LLC DC-to-DC topology for silent Modern Standby sleep

  • TypeATX
  • Faster wake-from-sleep with Modern Standby support
  • 80 PLUS Gold efficiency cuts power use and heat
  • Silent Zero RPM fan mode at low loads
  • Resonant LLC topology delivers clean, stable power
  • 1U form factor fits compact ATX builds

Compact 1U power for dense builds

This KHACHIMO 1U ATX supply delivers a rated 300 W with a 400 W peak, fitting servers or workstations where rack height is restricted. The SO-340U and SO-3400U design targets system integrators who need reliable power in a slim chassis without sacrificing ATX connector compatibility. It suits builds that must stay within a single rack unit while powering standard desktop components.

80 PLUS Gold efficiency and standby support

Certified at 80 PLUS Gold, the unit maintains high efficiency across typical loads, reducing waste heat and helping keep fan speeds low. Modern Standby compatibility allows the system to enter and exit low-power sleep states quickly, improving responsiveness for always-on or frequently woken workloads. The resonant LLC topology with DC-to-DC conversion supplies clean voltage regulation on all rails.

Zero RPM fan mode for quiet operation

At low and medium loads the cooling fan stops completely, eliminating audible noise during idle or light tasks. The DC-to-DC design also suppresses coil whine, contributing to a quieter environment in noise-sensitive deployments. Builders should verify that their 1U chassis provides adequate airflow, as the compact form factor relies on directed cooling rather than a large heatsink surface.

Points forts

  • Faster wake-from-sleep with Modern Standby support
  • 80 PLUS Gold efficiency cuts power use and heat
  • Silent Zero RPM fan mode at low loads
  • Resonant LLC topology delivers clean, stable power
  • 1U form factor fits compact ATX builds

Caractéristiques

TypeATX

Questions sur cet article

Should I pick the 300 W or 400 W rating for my build?

The unit is rated for 300 W continuous output and can reach 400 W peak; size your components so typical draw stays below 300 W.

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

It certifies high efficiency across typical loads, which lowers power draw, heat output and fan noise compared with lower-rated units.

How does the 1U ATX form factor limit where I can install it?

The 1U height fits slim rack or compact chassis that accept ATX power supplies, but it will not fit standard tower cases expecting a taller PSU.

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