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Black ATX power supply unit with gold efficiency badge

KHACHIMO

KHACHIMO H550BL4 550W ATX Power Supply 80 PLUS Gold

SKU CH-FN09-7PXQ4

ATX 550 W power supply with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support for fast wake times

  • TypeATX
  • Modern Standby support gives near-instant wake from sleep
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Zero RPM fan mode stops the fan at low loads
  • Resonant LLC topology with DC-to-DC delivers clean, stable power
  • 550 W ATX output handles mainstream builds

550W ATX Gold Power Supply

The KHACHIMO H550BL4 is a 550 watt ATX power supply built for modern desktop builds that demand efficient, reliable power delivery. Its 80 PLUS Gold certification confirms high efficiency across typical loads, making it suitable for gaming rigs and workstations alike.

Zero RPM Fan Mode and LLC Topology

At low and medium loads the cooling fan stops completely, delivering near-silent operation during everyday tasks. The resonant LLC topology with DC-to-DC conversion supplies clean, consistent power while reducing coil whine and supporting modern sleep states.

Modern Standby Compatibility

Modern Standby support enables extremely fast wake-from-sleep times and improved low-load efficiency. This feature benefits users who frequently suspend and resume their system rather than performing full shutdowns.

Points forts

  • Modern Standby support gives near-instant wake from sleep
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Zero RPM fan mode stops the fan at low loads
  • Resonant LLC topology with DC-to-DC delivers clean, stable power
  • 550 W ATX output handles mainstream builds

Caractéristiques

TypeATX

Questions sur cet article

How do I install the KHACHIMO H550BL4 550W ATX power supply in a standard case, and what step is often missed?

Mount the unit with the four case screws, connect the 24-pin ATX and CPU power cables, then plug the AC cord into a live wall socket before pressing the rear I/O switch — skipping the wall-socket step leaves the PSU dead.

What maintenance will the H550BL4 need over its life?

Vacuum dust from the intake grill once or twice per year; the Zero RPM fan mode means the fan spins only under load, so bearings last longer and no lubrication is required.

What limit appears first when the H550BL4 runs at high load for long periods?

The 550 W continuous ceiling — sustained draw above that triggers over-power protection and shuts the unit down.

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