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Compact 1U ATX power supply unit with matte metal casing and rear fan grille

KHACHIMO

KHACHIMO 1U 250W ATX Power Supply H1U-6250P H1U-6150P H1U-6200P

SKU CH-G9WR-TAQ3N

A 1U 250W ATX power supply with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support for compact quiet systems

  • TypeATX
  • Faster wake-from-sleep with Modern Standby support
  • 80 PLUS Gold efficiency reduces power draw and heat
  • Fan stops completely at low loads for silent running
  • LLC resonant topology with DC-to-DC cuts coil whine
  • 250 W ATX output in compact 1U form factor

1U 250W ATX PSU for dense builds

This 1U form-factor ATX power supply delivers 250 watts from a compact chassis suited to rackmount and small-form-factor systems. It carries 80 PLUS Gold certification for high efficiency and Modern Standby compatibility for rapid wake-from-sleep. The unit targets builders who need reliable power in a single rack unit.

Sustained load with Resonant LLC and DC-to-DC

Resonant LLC topology combined with DC-to-DC conversion maintains clean, consistent output during extended workloads rather than only brief peaks. The design reduces coil whine and supports deeper sleep states while keeping voltages stable. Efficiency remains high across the load range, limiting waste heat in continuous operation.

Replaces louder or less efficient 1U units

This supply upgrades older 1U PSUs that lack Gold efficiency, Modern Standby support or a zero-RPM fan mode. The jump is worthwhile when silence at idle and fast sleep recovery matter more than higher wattage headroom. It is not for systems requiring more than 250 watts or builders needing modular cables.

Highlights

  • Faster wake-from-sleep with Modern Standby support
  • 80 PLUS Gold efficiency reduces power draw and heat
  • Fan stops completely at low loads for silent running
  • LLC resonant topology with DC-to-DC cuts coil whine
  • 250 W ATX output in compact 1U form factor

Specifications

TypeATX

Questions about this item

How loud does the 250 W unit get when it runs all day?

The Zero RPM fan mode keeps the cooling fan off at low and medium loads for near-silent operation, and the resonant LLC topology with DC-to-DC conversion reduces coil whine.

What cables or connectors must my build already have for this PSU to work?

It is a standard ATX power supply, so your motherboard needs a 24-pin ATX connector and your CPU needs a 4- or 8-pin EPS connector; the unit provides those cables.

Will this 250 W supply run stably with older components I keep in the system?

The resonant LLC topology with DC-to-DC conversion delivers clean, consistent power and supports modern sleep states, making it compatible with a wide range of legacy hardware.

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