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Black ATX power supply unit with fan grille and cable bundle

KHACHIMO

KHACHIMO MA4000290A 400W ATX Power Supply

SKU CH-T5C5-80EW8

ATX 400W unit with 80 PLUS Gold efficiency, Modern Standby support, zero-RPM fan mode and LLC resonant topology for clean, quiet power delivery

  • TypeATX
  • Modern Standby support for faster wake times and better low-load efficiency
  • 80 PLUS Gold certification for high efficiency, lower power draw and cooler running
  • Zero RPM fan mode keeps the unit silent at low and medium loads
  • Resonant LLC topology with DC-to-DC conversion delivers clean power and reduces coil whine
  • 400 W ATX output for reliable system power

KHACHIMO 400W ATX Power Supply

This KHACHIMO unit delivers 400W of continuous power in a standard ATX form factor. It carries 80 PLUS Gold certification for high-efficiency operation and supports Modern Standby for rapid wake-from-sleep performance. The resonant LLC topology with DC-to-DC conversion ensures clean, consistent power delivery across all rails.

Ideal for efficient workstations and quiet builds

The Zero RPM fan mode keeps the system near-silent at low and medium loads, suiting noise-sensitive environments. Modern Standby compatibility benefits users who rely on fast sleep and wake cycles. Builders needing higher wattage for multi-GPU configurations or extreme overclocking should look at larger capacity units instead.

Standard ATX installation with semi-passive cooling

The power supply fits regular ATX mounting points and uses conventional connectors for motherboard and component power. Zero RPM mode engages automatically, so no software setup is required for silent operation. Ensure the case provides adequate airflow for the fan when it spins up under heavier loads.

Punti di forza

  • Modern Standby support for faster wake times and better low-load efficiency
  • 80 PLUS Gold certification for high efficiency, lower power draw and cooler running
  • Zero RPM fan mode keeps the unit silent at low and medium loads
  • Resonant LLC topology with DC-to-DC conversion delivers clean power and reduces coil whine
  • 400 W ATX output for reliable system power

Caratteristiche tecniche

TypeATX

Domande su questo articolo

Does my motherboard need a standard 24-pin ATX connector and a 4-pin or 8-pin CPU power plug for this 400 W unit?

Yes, the MA4000290A uses the ATX form factor so it provides a 24-pin main connector plus the required CPU power cable for any compatible board.

Will the 80 PLUS Gold efficiency and Zero RPM fan mode still benefit a system running an older CPU and mechanical drives?

Yes, the Gold-rated design lowers waste heat at every load level, and the fan stays off at low and medium loads regardless of the components drawing power.

How can I confirm the fan is operating in Zero RPM mode as intended after I build the PC?

Under light workloads the fan will be completely still and silent; you can also watch the fan-speed reading in your BIOS or monitoring software drop to 0 RPM.

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