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Rectangular silver metal ATX power supply unit with rear fan grille and power socket

KHACHIMO

KHACHIMO HK303-11UEP 200W ATX power supply

SKU CH-H4QR-VVRCM

A standard 1U 200W ATX power supply with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support for fast wake times

  • TypeATX
  • Fast wake-from-sleep with Modern Standby support
  • Lower power draw via 80 PLUS Gold efficiency
  • Near-silent operation with Zero RPM fan mode
  • Clean, stable power from resonant LLC topology
  • 200 W ATX power for compact builds

Compact 1U ATX power supply

The KHACHIMO HK303-11UEP delivers 200 W in a 1U ATX form factor suited to slim desktops and small-form-factor workstations. Modern Standby compatibility enables rapid wake-from-sleep transitions and improved low-load efficiency. 80 PLUS Gold certification confirms high-efficiency operation across typical loads.

Build quality and daily use

A resonant LLC topology with DC-to-DC conversion supplies clean, consistent power while reducing coil whine. Zero RPM fan mode stops the cooling fan entirely at low and medium loads for near-silent operation. The 1U height fits restricted chassis where standard ATX units cannot be installed.

Upgrade path and fit

This unit replaces lower-efficiency or noisy power supplies in compact systems that require ATX connectivity. The efficiency and acoustic gains are most noticeable when moving from a non-certified or Bronze-rated design. Builders needing higher wattage or additional connectors for discrete graphics should consider a larger chassis and supply.

Highlights

  • Fast wake-from-sleep with Modern Standby support
  • Lower power draw via 80 PLUS Gold efficiency
  • Near-silent operation with Zero RPM fan mode
  • Clean, stable power from resonant LLC topology
  • 200 W ATX power for compact builds

Specifications

TypeATX

Questions about this item

What ATX standard does the HK303-11UEP follow, and what power level does that cap it at?

It is an ATX-type unit rated for 200 W continuous output, so the ATX form factor limits it to that maximum power level.

What physical space does the HK303-11UEP need to fit in a chassis?

The supply uses a standard 1U height ATX form factor, requiring a case or rack that accepts a 1U power supply.

How is the HK303-11UEP installed, and which step is commonly missed?

Mount the 1U unit with four screws, connect the 24-pin ATX and CPU power cables, then enable Modern Standby in the BIOS so the fast wake and low-load efficiency features actually work.

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