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

KHACHIMO

KHACHIMO FLXE-ATX 1U K39 500W Power Supply

SKU CH-JJY3-9TZCB

A 500 W ATX power supply with 80 PLUS Gold efficiency, Zero RPM fan mode, Modern Standby support and resonant LLC topology with DC-to-DC conversion for clean, quiet, low-power operation

  • Product typeATX
  • Fast 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 with DC-to-DC delivers clean, stable power
  • Compact 1U form factor fits space-constrained builds

Compact 1U ATX Power Supply

The KHACHIMO FLXE-ATX K39 is a 500W unit built to the 1U form factor for rackmount or slimline chassis. It targets system integrators and enthusiasts assembling space-constrained servers, workstations or HTPCs that still require standard ATX connectivity.

Sustained Load Behaviour

80 PLUS Gold certification confirms high efficiency across typical operating ranges, reducing waste heat during continuous operation. Resonant LLC topology with DC-to-DC conversion delivers stable voltage regulation under prolonged load while suppressing coil whine. Zero RPM fan mode keeps the unit silent at low and medium loads, spinning up only when thermal demand requires active cooling.

Installation Notes

The 1U height fits approved slim enclosures, but cable routing in tight bays can be awkward due to the fixed cable bundle. Builders should verify chassis depth and connector clearance before purchase, as the compact housing leaves little room for excess cable management. Modern Standby support enables rapid wake-from-sleep, yet requires a compatible motherboard and operating system to function correctly.

How it compares

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

Price $398.99
Pricier than about 85% 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 fan during all-day use?

At low and medium loads the Zero RPM Fan Mode stops the fan completely for near-silent operation.

What cables must I already have to install this unit?

Standard ATX motherboard and peripheral cables are required; the supply uses a regular ATX pin-out.

Will it work reliably with older components I keep?

Resonant LLC topology with DC-to-DC conversion delivers clean, consistent power suitable for legacy hardware.

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