We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Standard ATX power supply unit, matte black finish, single cooling fan, modular cable connectors visible

KHACHIMO

KHACHIMO U20 Ultra20 M2 400W ATX Power Supply

SKU CH-0MSK-H0R17

A 400W ATX power supply with 80 PLUS Gold efficiency, Zero RPM fan mode and Modern Standby compatibility for fast wake times and quiet operation

  • TypeATX
  • Modern Standby compatible for near-instant wake from sleep
  • 80 PLUS Gold certified efficiency cuts power draw and heat
  • Zero RPM fan mode stops the fan at low loads for silent running
  • Resonant LLC topology with DC-to-DC conversion delivers clean, stable power
  • ATX form factor fits standard desktop cases

KHACHIMO U20 Ultra20 M2 400W ATX PSU

The KHACHIMO U20 Ultra20 M2 is a 400W ATX power supply built for modern desktop PCs. It carries 80 PLUS Gold certification and uses Resonant LLC topology with DC-to-DC conversion for clean power delivery. Modern Standby compatibility enables extremely fast wake-from-sleep times and better low-load efficiency. A Zero RPM fan mode stops the fan at low and medium loads for near-silent operation.

Suited for modern standby PCs needing quiet gold

This unit suits builders who want a Gold-rated ATX supply with Modern Standby support and a semi-passive fan curve. It fits systems that prioritise low idle noise and quick sleep recovery. Buyers who need more than 400W of continuous power should look at higher-capacity models. Those requiring a fully modular cable set or a specific form factor other than standard ATX will need a different design.

400W ATX with Modern Standby and Zero RPM fan

The single specification that decides fit is the 400W ATX rating combined with Modern Standby compatibility and Zero RPM fan mode. This defines the power ceiling, the sleep-state behaviour and the acoustic profile at typical loads. If your build demands higher wattage, a different form factor, or does not use Modern Standby sleep states, this unit will not match the requirement.

Highlights

  • Modern Standby compatible for near-instant wake from sleep
  • 80 PLUS Gold certified efficiency cuts power draw and heat
  • Zero RPM fan mode stops the fan at low loads for silent running
  • Resonant LLC topology with DC-to-DC conversion delivers clean, stable power
  • ATX form factor fits standard desktop cases

Specifications

TypeATX

Questions about this item

Should I pick the U20 Ultra20 M2 400W model or a different capacity?

The U20 Ultra20 M2 is offered as a 400 watt ATX unit; choose it if your build’s total power draw stays comfortably below that limit.

What does the 400W rating mean once the unit is installed?

It can deliver up to 400 watts continuously to your components while meeting 80 PLUS Gold efficiency targets at typical loads.

Is the ATX form factor the only standard I need to check for fit?

Yes, it follows the ATX specification, so it fits standard ATX cases and motherboards without proprietary connectors.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.