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Compact silver 1U ATX power supply unit with rear fan grille and power socket

KHACHIMO

KHACHIMO 1U 400W ATX power supply DPS-400AB-12A

SKU CH-S46Y-J7GAX

A 1U 400W ATX power supply with 80 PLUS Gold efficiency, Modern Standby support, Zero RPM fan mode and resonant LLC topology

  • TypeATX
  • Modern Standby compatibility enables rapid wake-from-sleep and improved low-load efficiency
  • 80 PLUS Gold certification delivers high efficiency for reduced power draw and cooler running
  • 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 power and reduces coil whine
  • Compact 1U form factor fits space-constrained ATX builds while supplying 400W

1U 400W ATX Power Supply

The KHACHIMO DPS-400AB-12A is a 1U form-factor ATX power supply rated at 400W. It targets compact server chassis, workstation builds and small-form-factor PCs where vertical space is limited. The unit carries 80 PLUS Gold certification and supports Modern Standby for rapid wake-from-sleep transitions. It suits system integrators and builders who need efficient, space-saving power delivery.

Compatibility and installation notes

Verify that your chassis accepts a 1U ATX power supply and that the mounting pattern matches the DPS-400AB-12A dimensions. Confirm the motherboard requires a standard ATX main connector and check the number of peripheral connectors your drives and add-in cards need. This unit is not for builders who need a second power supply for redundancy or those requiring a higher total output than 400W.

Thermals, noise and power draw

The 80 PLUS Gold rating indicates high efficiency across typical loads, reducing waste heat and overall power draw. A Zero RPM fan mode stops the cooling fan completely at low and medium loads, delivering near-silent operation during idle or light work. Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and helps suppress coil whine for quieter performance in normal use.

Highlights

  • Modern Standby compatibility enables rapid wake-from-sleep and improved low-load efficiency
  • 80 PLUS Gold certification delivers high efficiency for reduced power draw and cooler running
  • 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 power and reduces coil whine
  • Compact 1U form factor fits space-constrained ATX builds while supplying 400W

Specifications

TypeATX

Questions about this item

Does the KHACHIMO 1U 400W ATX power supply include all necessary cables or must any be purchased separately?

The box contains the power supply unit only; modular cables are not included and must be sourced separately to match your build.

Which model suffix — DPS-400AB-12A, DPS-400AB-12 G, DPS-400AB-12A or DPS-400AB-12G — should I select for my 1U server chassis?

All listed suffixes refer to the same 400W 1U ATX unit; choose the exact part number that matches your existing label or chassis documentation.

What does the 80 PLUS Gold rating mean for daily power draw and heat in a running system?

It guarantees at least 80 percent efficiency at typical loads, reducing wasted electricity, lowering internal temperatures and allowing the fan to stay off longer under light use.

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