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Silver 1U rack power supply with rear fan grille

KHACHIMO

KHACHIMO DPS-400AB-12F 1U 400W 80plus Gold power supply

SKU CH-DD8X-ZZ32H

A 1U ATX power supply delivering 400 W with 80 PLUS Gold efficiency, zero-RPM fan mode, Modern Standby support and resonant LLC topology with DC-to-DC conversion

  • TypeATX
  • Modern Standby compatibility enables extremely fast wake-from-sleep times
  • 80 PLUS Gold certification delivers high efficiency for lower power consumption and cooler operation
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent running
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine
  • 400 W ATX output supports modern standby sleep states and efficient low-load operation

1U 400W 80 PLUS Gold Power Supply

The KHACHIMO DPS-400AB-12F is a 1U form-factor ATX power supply rated at 400W. It targets system integrators and builders assembling compact servers or workstations where rack height is restricted. The unit carries 80 PLUS Gold certification for high efficiency across typical loads. It is not suited for builds that require higher wattage headroom or full-size ATX dimensions.

Compact Build Integration

The 1U chassis fits directly into standard rackmount enclosures and shallow-depth cases designed for slim power supplies. Its ATX connector layout supports modern motherboards while the DC-to-DC conversion topology simplifies voltage regulation on the secondary side. Modern Standby compatibility enables faster wake-from-sleep transitions for supported platforms. Builders needing redundant power modules or larger cable bundles should verify chassis clearance before ordering.

Sustained Load Behaviour

Under continuous operation the resonant LLC topology delivers clean, consistent power with reduced coil whine. The Zero RPM fan mode keeps the cooling fan stationary at low and medium loads, cutting acoustic output during idle or background tasks. 80 PLUS Gold efficiency lowers waste heat, helping internal temperatures stay stable during extended duty cycles. The supply lacks active fan control at higher loads, so airflow management in the host enclosure remains critical.

Highlights

  • Modern Standby compatibility enables extremely fast wake-from-sleep times
  • 80 PLUS Gold certification delivers high efficiency for lower power consumption and cooler operation
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent running
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine
  • 400 W ATX output supports modern standby sleep states and efficient low-load operation

Specifications

TypeATX

Questions about this item

How much continuous power can the DPS-400AB-12F deliver before hitting its limit?

The unit is rated for 400 W of continuous output, so sustained loads above that will trigger protection.

Does the fan stay on all day or does it stop at lighter loads?

Zero RPM Fan Mode turns the fan off completely at low and medium loads for near-silent operation.

What motherboard power connector does this 1U supply use?

It follows the ATX form factor, so it plugs into a standard 24-pin ATX motherboard connector.

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