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Rectangular 1U silver metal power supply unit with rear fan grille and side ventilation slots

KHACHIMO

KHACHIMO ST-400UAG-05F 400W ATX power supply

SKU CH-AZME-KE09R

A 400W ATX power supply with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby compatibility for quiet, low-power sleep states

  • TypeATX
  • Faster wake-from-sleep with Modern Standby support
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Fan stops at low load for silent running
  • LLC resonant topology with DC-to-DC reduces coil whine
  • 400 W ATX output for compact 1U builds

Compact 1U ATX supply for rack and small-form builds

The KHACHIMO ST-400UAG-05F is a 1U form-factor ATX power supply rated at 400W. It suits compact servers, rack-mounted chassis and space-constrained workstations where a standard PSU will not fit. Builders needing higher wattage or a full-size ATX frame should look elsewhere.

80 PLUS Gold efficiency with Modern Standby support

Certified 80 PLUS Gold, the unit delivers high efficiency across typical loads for lower power draw and cooler running. Modern Standby compatibility enables extremely fast wake-from-sleep transitions and improved low-load efficiency for systems that use modern sleep states.

Zero RPM fan and LLC topology simplify integration

At low and medium loads the fan stops completely, removing acoustic noise during idle or light work. The resonant LLC topology with DC-to-DC conversion supplies clean, stable power and reduces coil whine. Ensure the target chassis accepts a 1U PSU and provides the required ATX connector set before ordering.

Points forts

  • Faster wake-from-sleep with Modern Standby support
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Fan stops at low load for silent running
  • LLC resonant topology with DC-to-DC reduces coil whine
  • 400 W ATX output for compact 1U builds

Caractéristiques

TypeATX

Questions sur cet article

What does the 400W rating mean when the unit is installed in a PC?

The 400W rating is the maximum continuous power the unit can deliver across all rails combined. It sets the ceiling for the total draw of your CPU, GPU, drives and peripherals under full load.

What does the 80 PLUS Gold certification actually limit in daily use?

It guarantees the unit meets defined efficiency thresholds at several load points, reducing waste heat and lowering the power drawn from the wall for a given system load.

What physical space and mounting does this 1U supply need?

It uses the standard 1U rack height and ATX mounting pattern, so it fits any chassis or rack tray designed for a 1U ATX power supply.

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