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Compact 1U ATX power supply with matte black finish and rear fan grille

KHACHIMO

KHACHIMO FLXA5351A 1U 350W ATX power supply

SKU CH-D26W-TABA5

A 1U 350W ATX unit with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support for compact builds

  • TypeATX
  • Faster wake-from-sleep with Modern Standby support
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Fan stops completely at low loads for silent running
  • Resonant LLC plus DC-to-DC delivers clean, stable power
  • Compact 1U 350W ATX design fits small-form-factor builds

Compact 1U 350W ATX power supply

The KHACHIMO FLXA5351A is a 1U form-factor ATX unit rated at 350W, designed for small-form-factor PCs, HTPC builds and ITX cases where vertical space is limited. Its 80 PLUS Gold certification ensures high efficiency across typical loads, reducing heat and electricity draw for always-on or living-room systems.

Straightforward ATX fit with semi-passive cooling

Installation follows standard ATX mounting points and connector layouts, so it drops into any compatible chassis without adapters. The Zero RPM fan mode keeps the unit silent at low and medium loads, while the resonant LLC topology with DC-to-DC conversion minimises coil whine and delivers clean power for stable sleep-state transitions.

350W headroom for efficient builds

The 350W continuous output comfortably powers modern low-TDP CPUs, integrated graphics or entry-level discrete cards, along with a few drives and peripherals. It is not suited for high-wattage GPUs, multi-GPU configurations or heavily overclocked workstations that demand sustained loads above its rated capacity.

Highlights

  • Faster wake-from-sleep with Modern Standby support
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Fan stops completely at low loads for silent running
  • Resonant LLC plus DC-to-DC delivers clean, stable power
  • Compact 1U 350W ATX design fits small-form-factor builds

Specifications

TypeATX

Questions about this item

How can I confirm the KHACHIMO FLXA5351A is operating correctly after installation?

The unit is 80 PLUS Gold certified and features Zero RPM Fan Mode; at low and medium loads the fan will stop completely, so silent operation under light use confirms the mode is active.

What cables come with the power supply and what must I source separately?

The power supply includes its fixed ATX cable harness; any specialised GPU or extra drive cables required by your build are not included and must be purchased separately.

Which capacity of the FLXA5351A should I choose for a compact 1U build?

The model is rated at 350 W, making it suited for small form factor systems that need Modern Standby support and Gold efficiency within a 1U chassis.

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