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Compact 1U 350W ATX power supply with gold finish and rear fan grille

KHACHIMO

KHACHIMO FLXA5351A 350W 1U 80 PLUS Gold power supply

SKU CH-V4RG-3KJ1Q

A 350 W ATX power supply with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support for fast wake times

  • Product typeATX
  • Faster wake-from-sleep with Modern Standby support
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Zero RPM fan mode keeps low-load operation silent
  • Resonant LLC topology with DC-to-DC reduces coil whine
  • Compact 1U design delivers 350W for space-constrained builds

Compact 1U 350 W PSU for rack builds

The KHACHIMO FLXA5351A is a 1U form-factor ATX power supply rated at 350 W and built for space-constrained servers or workstations. It targets system integrators who need reliable power in a single rack unit without sacrificing efficiency certifications.

80 PLUS Gold efficiency under continuous load

The unit holds 80 PLUS Gold certification, meaning it maintains high efficiency across sustained workloads rather than only at peak bursts. Resonant LLC topology with DC-to-DC conversion delivers clean, consistent power while reducing coil whine, and Modern Standby support enables deeper, more energy-efficient sleep states during idle periods.

Verify 1U clearance and ATX connector fit

Confirm your chassis accommodates a 1U height power supply and that the ATX connector layout matches your motherboard. The Zero RPM fan mode stops the fan at low and medium loads for near-silent operation, but airflow must still be sufficient for the enclosure when the fan spins up under heavier demand.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $241.99
Pricier than about 71% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeATX

Questions about this item

How loud is the 350W unit when it runs all day in a 1U chassis?

Zero RPM Fan Mode stops the fan completely at low and medium loads for near-silent operation, while 80 PLUS Gold efficiency keeps heat and noise lower at higher loads.

What cables or connectors must I already have to install this ATX power supply?

Standard ATX motherboard and peripheral cables are required; the unit uses the ATX form factor so existing ATX-compatible cables will fit.

Will the resonant LLC topology with DC-to-DC conversion cause issues with older components I keep?

The topology delivers clean, consistent power and reduces coil whine, making it compatible with older hardware while supporting modern sleep states.

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