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Compact 1U ATX power supply with matte black finish and rear fan grille

KHACHIMO

KHACHIMO K39 300W 400W power supply

SKU CH-HM34-2B3KS

Compact ATX unit delivering 300 W continuous and 400 W peak power with 80 PLUS Gold efficiency and a Zero RPM fan mode for silent low-load operation

  • TypeATX
  • 80 PLUS Gold certification cuts power draw and heat
  • Zero RPM fan mode stops the fan at low loads for silent running
  • Modern Standby support gives faster wake-from-sleep and better idle efficiency
  • Resonant LLC topology with DC-to-DC conversion delivers clean power and reduces coil whine
  • Rated 300 W continuous with 400 W peak for stable output

Compact 1U PSU for space-constrained builds

The KHACHIMO K39 is a 1U form-factor power supply rated at 300 watts continuous and 400 watts peak. It suits small-form-factor chassis, embedded systems or replacement upgrades where depth is limited. Builders needing a short ATX unit for a slim enclosure will find it fits without modification.

80 PLUS Gold efficiency with Modern Standby support

The unit carries 80 PLUS Gold certification, meaning it meets high efficiency targets across typical loads. Modern Standby compatibility enables extremely fast wake-from-sleep times and improved low-load efficiency. Resonant LLC topology with DC-to-DC conversion delivers clean power and reduces coil whine.

Zero RPM fan mode keeps noise low

At low and medium loads the cooling fan stops completely for near-silent operation. The ATX connector set powers standard motherboards and peripherals in compact builds. Buyers who need higher continuous wattage or modular cabling for extensive GPU configurations should look elsewhere.

Highlights

  • 80 PLUS Gold certification cuts power draw and heat
  • Zero RPM fan mode stops the fan at low loads for silent running
  • Modern Standby support gives faster wake-from-sleep and better idle efficiency
  • Resonant LLC topology with DC-to-DC conversion delivers clean power and reduces coil whine
  • Rated 300 W continuous with 400 W peak for stable output

Specifications

TypeATX

Questions about this item

What does the 300 W rating mean once the unit is installed?

300 W is the continuous power the supply can deliver to the system; the 400 W figure is a short-term peak and should not be used for sizing.

How does the ATX type limit what the PSU can power?

ATX defines the standard 24-pin main connector, 4/8-pin CPU connector and peripheral cables, so it fits typical desktop motherboards and drives.

What physical space does the 1U K39 need to fit or mount?

The 1U form factor is 39 mm tall and designed to slide into a standard 1U rack or slim chassis with matching screw holes.

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