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Silver 1U metal power supply unit with rear fan grille and cable connectors

KHACHIMO

KHACHIMO FSP 1U 400W Power Supply FSP400-601UE

SKU CH-KT7Q-MRSAT

A 400 W 1U ATX power supply with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support

  • TypeATX
  • Modern Standby support for near-instant wake from sleep
  • 80 PLUS Gold certification cuts power draw and heat
  • Zero RPM fan mode stops the fan at low load
  • Resonant LLC with DC-to-DC delivers clean, stable power
  • Compact 1U form factor fits space-constrained server chassis

1U 400W ATX power supply

This 1U ATX power supply delivers 400W of continuous output for rackmount servers, compact workstations and thin-profile enclosures. It fits standard 1U chassis where height is restricted and a conventional PSU cannot be installed. The unit is new and ready for deployment in space-constrained builds.

Thermals, noise and power draw

80 PLUS Gold certification means high efficiency across the load range, reducing waste heat and keeping internal temperatures lower. A Zero RPM fan mode stops the cooling fan completely at low and medium loads for near-silent operation. Resonant LLC topology with DC-to-DC conversion provides clean power and further reduces coil whine.

Upgrade path and fit

Replaces older 1U supplies that lack Modern Standby support, Gold efficiency or fan-stop capability. The jump is worthwhile when faster wake-from-sleep, quieter idle noise and lower electricity draw matter for always-on or frequently suspended systems. Builders needing higher wattage or a different form factor should look elsewhere.

Points forts

  • Modern Standby support for near-instant wake from sleep
  • 80 PLUS Gold certification cuts power draw and heat
  • Zero RPM fan mode stops the fan at low load
  • Resonant LLC with DC-to-DC delivers clean, stable power
  • Compact 1U form factor fits space-constrained server chassis

Caractéristiques

TypeATX

Questions sur cet article

How do I install the KHACHIMO FSP 1U 400W power supply in a 1U rack chassis and which step is most often missed?

Slide the unit into the 1U bay, secure the four mounting screws, connect the 24-pin ATX and CPU power cables, then verify the Modern Standby pin is seated — that pin is the step most builders forget.

What maintenance will the FSP400-601UE need over its service life?

The Zero RPM fan mode keeps the fan off at low load, so dust builds slowly; plan to blow out the heatsink fins once a year and listen for bearing noise — if the fan rattles, replace the fan assembly.

Which limit appears first when the 400W supply runs at sustained load?

The 80 PLUS Gold efficiency curve drops above 80% load, so sustained draws near 400W raise internal temperatures until the fan ramps to maximum speed — that thermal ceiling is the first hard limit.

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