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Silver rectangular ATX power supply unit with ventilation grille

KHACHIMO

KHACHIMO PSB400M-J3 400W power supply

SKU CH-Y134-XJT57

ATX power supply delivering 400 W for CWT systems, tested working and listed since 2024

  • TypeATX
  • ATX form factor fits standard PC cases
  • 400 W output powers mid-range components reliably
  • Tested working before shipment ensures dependable start-up
  • Good-quality components support stable voltage delivery
  • First listed March 2024 indicates current production

400W ATX power supply

The KHACHIMO PSB400M-J3 is a 400W ATX power supply built for CWT platforms. It suits builders replacing a unit in a standard desktop chassis or assembling a basic office system. The unit is supplied new and has been tested working before shipment.

ATX form-factor limits

The ATX layout fixes the overall mounting pattern and connector spacing, so the unit fits standard bays but cannot adapt to proprietary or reduced-height enclosures. Cable lengths follow the ATX specification and may not reach drives in deep full-tower cases without extensions.

Straightforward ATX installation

Installation follows the usual four-screw ATX mounting and main 24-pin plus CPU power connectors. The most common issue is discovering that a proprietary motherboard or undersized case prevents the standard connector layout from seating correctly.

Highlights

  • ATX form factor fits standard PC cases
  • 400 W output powers mid-range components reliably
  • Tested working before shipment ensures dependable start-up
  • Good-quality components support stable voltage delivery
  • First listed March 2024 indicates current production

Specifications

TypeATX

Questions about this item

Is the 400W ATX version the only capacity offered for this model?

Yes, the PSB400M-J3 is supplied as a single 400W ATX unit; no other wattage or form-factor options are listed for this part number.

What does the 400W rating mean once the supply is installed in a PC?

It indicates the maximum continuous DC power the unit can deliver across all rails combined when mounted in a standard ATX chassis.

Which ATX standard does the PSB400M-J3 follow, and what does that limit in practice?

The supply uses the ATX form factor, so it fits standard ATX cases and motherboards, limiting physical dimensions and connector layout to that specification.

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