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Rectangular metal ATX power supply unit with matte black finish and rear fan grille

KHACHIMO

KHACHIMO Workstation Z1 G2 400W Power Supply DPS-400AB-15A

SKU CH-KJ41-M4VWV

A 400 W ATX unit with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support for quiet, low-power workstations

  • TypeATX
  • Faster wake-from-sleep with Modern Standby support
  • Lower power draw thanks to 80 PLUS Gold efficiency
  • Near-silent operation via Zero RPM fan mode
  • Clean power delivery using resonant LLC with DC-to-DC conversion
  • Standard ATX form factor fits typical workstation builds

KHACHIMO Workstation Z1 G2 400W PSU

The KHACHIMO Workstation Z1 G2 is a 400W ATX power supply built for modern workstations and desktop PCs. It delivers reliable power for professional applications and general computing tasks. The unit carries 80 PLUS Gold certification for high efficiency operation. Modern Standby compatibility ensures extremely fast wake-from-sleep times and better low-load efficiency.

ATX form factor limits and efficiency

The ATX form factor fits standard desktop chassis but requires sufficient internal space for the unit and its cables. 80 PLUS Gold certification guarantees high efficiency at typical loads, reducing power consumption and heat output. Zero RPM Fan Mode stops the fan at low and medium loads for near-silent operation. Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine.

Replaces older lower-efficiency units

This unit replaces older power supplies lacking 80 PLUS Gold efficiency and Modern Standby support. The upgrade is worthwhile when building or refreshing a workstation that demands low noise, high efficiency, and fast sleep-state wake times. Zero RPM Fan Mode and resonant LLC topology offer quieter, cleaner power than legacy designs. It suits users needing reliable 400W delivery with modern sleep-state features.

Highlights

  • Faster wake-from-sleep with Modern Standby support
  • Lower power draw thanks to 80 PLUS Gold efficiency
  • Near-silent operation via Zero RPM fan mode
  • Clean power delivery using resonant LLC with DC-to-DC conversion
  • Standard ATX form factor fits typical workstation builds

Specifications

TypeATX

Questions about this item

Which version of the 400W power supply should I choose for my workstation?

The DPS-400AB-15A unit replaces part numbers 650503-001, 656522-001 and 860478-001, so select this model if your system requires any of those.

What does the 400W rating mean once the unit is installed in my PC?

It delivers up to 400 watts of continuous power to the motherboard, CPU and graphics cards while meeting 80 PLUS Gold efficiency targets at typical loads.

What ATX standard does this supply follow and what does it limit in practice?

It follows the ATX form factor and its 400W maximum caps the total combined output available to all rails, while Modern Standby support enables faster wake times.

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