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Rectangular ATX power supply unit with matte black metal casing, visible cooling fan grille and rear power socket

KHACHIMO

KHACHIMO S5 Pro 270W power supply S3330 S400

SKU CH-NXRB-YHB53

An 80 PLUS Gold ATX power supply with zero-RPM fan mode and LLC resonant topology for quiet, efficient operation

  • TypeATX
  • Modern Standby support enables near-instant wake from sleep
  • 80 PLUS Gold certification cuts power draw and heat output
  • Zero RPM fan mode stops the fan at low loads for silent running
  • Resonant LLC topology with DC-to-DC conversion delivers clean, stable power
  • ATX form factor fits standard desktop cases

270W ATX Power Supply

The KHACHIMO S5 Pro delivers 270 watts of ATX power for small-form-factor desktops and office workstations. Its 80 PLUS Gold certification ensures high efficiency across typical loads. Modern Standby compatibility enables extremely fast wake-from-sleep times. The unit replaces several OEM part numbers including PCA227 and DPS-220AB-6A.

Standard ATX Installation

The unit fits standard ATX mounting points and uses conventional connectors for straightforward replacement. Zero RPM fan mode eliminates noise at low and medium loads by stopping the fan entirely. Resonant LLC topology with DC-to-DC conversion reduces coil whine for quieter operation. Verify connector compatibility with your specific motherboard before fitting.

Sustained Load Behaviour

Under continuous load the 80 PLUS Gold design maintains high efficiency for lower power draw and cooler temperatures. DC-to-DC conversion provides clean, consistent power delivery during extended sessions. The fan remains off until higher thermal thresholds are reached. Builders needing more than 270 watts or additional PCIe connectors should consider higher-capacity units.

Points forts

  • Modern Standby support enables near-instant wake from sleep
  • 80 PLUS Gold certification cuts power draw and heat output
  • Zero RPM fan mode stops the fan at low loads for silent running
  • Resonant LLC topology with DC-to-DC conversion delivers clean, stable power
  • ATX form factor fits standard desktop cases

Caractéristiques

TypeATX

Questions sur cet article

How can I verify the S5 Pro 270W unit is operating correctly after installation?

The system should wake from sleep almost instantly thanks to Modern Standby support, and the fan should remain off during light loads because of the Zero RPM mode.

What comes with the power supply and what must I source separately?

The unit includes the PS-6271-7 or PS-6271-9 power supply itself; mounting screws and any modular cables required for your specific build are not included.

Which of the listed model numbers such as PCA227, PCA322 or DPS-220AB-6A should I select?

Choose the code that matches the original part number on your existing unit; PCA227, PCA322, DPS-220AB-6A and PCA222 represent different OEM revisions for specific chassis.

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