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Silver 1U ATX power supply unit with rear fan grille and modular cable connectors

KHACHIMO

KHACHIMO GW-EPS1U400WB 1U 400W ATX power supply

SKU CH-8S13-Q7ZC9

A 1U ATX unit delivering 400 W with 80 PLUS Gold efficiency, Modern Standby support, Zero RPM fan mode and resonant LLC plus DC-to-DC topology for clean, quiet power

  • TypeATX
  • Modern Standby compatibility for fast wake-from-sleep and better low-load efficiency
  • 80 PLUS Gold certification delivers high efficiency for lower power consumption and cooler temps
  • 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
  • 400 W ATX output in a 1U form factor for compact server or workstation builds

1U 400W ATX Power Supply

The KHACHIMO GW-EPS1U400WB is a compact 1U form-factor ATX power supply delivering 400W of continuous power. It targets builders assembling rack-mount servers, slim workstations or space-constrained industrial chassis where height is at a premium. The unit arrives new and ready for integration into compatible 1U enclosures.

80 PLUS Gold ATX Limits

As an ATX-standard supply it relies on the host chassis for airflow and cable routing space. The 80 PLUS Gold rating guarantees high efficiency at typical loads but does not alter the ATX connector layout or voltage regulation limits defined by the specification. Builders must verify that their backplane or motherboard fits the 1U depth and that the fixed cable set reaches every required connector.

400W Capacity Headroom

With 400W available the unit comfortably powers single-socket server boards, modest GPU accelerators and multiple storage drives while leaving headroom for transient spikes. Systems demanding dual high-end GPUs, large memory populations or extreme overclocking headroom will exceed this capacity and require a higher-wattage design.

Highlights

  • Modern Standby compatibility for fast wake-from-sleep and better low-load efficiency
  • 80 PLUS Gold certification delivers high efficiency for lower power consumption and cooler temps
  • 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
  • 400 W ATX output in a 1U form factor for compact server or workstation builds

Specifications

TypeATX

Questions about this item

Which capacity suits a compact server build?

The 400 W unit fits 1U chassis and delivers enough headroom for typical single-CPU configurations.

What does the 80 PLUS Gold rating mean once installed?

It guarantees high efficiency at typical loads, reducing waste heat and keeping fan speeds lower.

How does the ATX form factor limit cable routing in a 1U case?

Standard ATX connectors are used, so cable lengths must match the shallow depth of a 1U enclosure.

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