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Rectangular silver ATX power supply unit with cooling fan visible

KHACHIMO

KHACHIMO 400W FSP400-60THN-P WS-843AW power supply

SKU CH-W6KC-MD3PR

ATX industrial control unit rated at 400 W with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support

  • TypeATX
  • Faster wake-from-sleep with Modern Standby support
  • Lower power draw and heat via 80 PLUS Gold efficiency
  • Near-silent running at low loads with Zero RPM fan mode
  • Clean, stable output from resonant LLC topology with DC-to-DC conversion
  • Reduced coil whine for quieter overall operation

400W Industrial ATX Power Supply

This 400W ATX power supply is built for industrial control computers that need reliable, efficient power delivery. It suits system integrators and technicians maintaining embedded or automation equipment where uptime and quiet operation matter.

Gold Efficiency With Zero RPM Fan

The unit carries 80 PLUS Gold certification, reducing waste heat and lowering acoustic output under load. A Zero RPM fan mode stops the cooling fan completely at low and medium loads, while resonant LLC topology with DC-to-DC conversion minimises coil whine and supports deeper sleep states.

Modern Standby For Fast Wake Times

Modern Standby compatibility enables extremely fast wake-from-sleep transitions and improved low-load efficiency, a requirement for always-connected industrial workloads. Systems without Modern Standby support will not benefit from this feature.

Highlights

  • Faster wake-from-sleep with Modern Standby support
  • Lower power draw and heat via 80 PLUS Gold efficiency
  • Near-silent running at low loads with Zero RPM fan mode
  • Clean, stable output from resonant LLC topology with DC-to-DC conversion
  • Reduced coil whine for quieter overall operation

Specifications

TypeATX

Questions about this item

Does the ATX interface limit this unit to 400 W continuous output?

The power supply is rated for 400 W continuous delivery through its ATX form factor.

What chassis clearance does the standard ATX size require?

It fits any case with a standard ATX power-supply bay and the usual four mounting holes.

How is Modern Standby enabled during installation?

Connect the 24-pin motherboard cable and the 4/8-pin CPU cable; the step often missed is ensuring the motherboard firmware has Modern Standby turned on so the PSU can enter its low-power states.

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