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Rectangular black ATX power supply unit with cooling fan and cable bundle

KHACHIMO

KHACHIMO PS-2152-1H 550W ATX Power Supply

SKU CH-0FF7-3MEC8

An ATX power supply delivering 550 watts with 80 PLUS Gold efficiency, zero-RPM fan mode for silent low-load operation, and Modern Standby compatibility for fast wake times

  • TypeATX
  • Modern Standby support gives extremely fast wake-from-sleep and better low-load efficiency
  • 80 PLUS Gold certification delivers high efficiency for lower power use, less noise, cooler temps
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent operation
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine
  • 550W ATX switching power supply built for modern desktop systems

KHACHIMO 550W ATX Power Supply

The KHACHIMO PS-2152-1H is a 550W ATX power supply built for desktop PCs that need efficient, quiet power delivery. It suits builders assembling modern standby-capable systems who value low idle consumption and silent running at typical loads.

Upgrading from older group-regulated

Moving to this 80 PLUS Gold unit with resonant LLC topology and DC-to-DC conversion cuts waste heat and coil whine while supporting deeper sleep states. The jump is worth it when replacing a supply that cannot hold modern standby voltages or runs its fan constantly at low load.

Standard ATX installation with a semi-passive fan

The unit fits regular ATX bays and uses standard pinouts, so cable routing follows familiar patterns. The zero RPM fan mode stays off until the load rises, meaning the only common surprise is expecting silence under heavy sustained draw when the fan eventually spins up.

Highlights

  • Modern Standby support gives extremely fast wake-from-sleep and better low-load efficiency
  • 80 PLUS Gold certification delivers high efficiency for lower power use, less noise, cooler temps
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent operation
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine
  • 550W ATX switching power supply built for modern desktop systems

Specifications

TypeATX

Questions about this item

Will the ATX form-factor PS-2152-1H fit my standard PC case?

Yes, it follows the ATX form factor used by most mid-tower and full-tower cases.

Which power cables must be connected during installation, and which step is often missed?

Connect the 24-pin motherboard cable and the 4+4-pin CPU cable; the CPU cable is the one builders forget.

How do I know when the 550W unit's fan bearing needs replacement?

The Zero RPM mode keeps the fan off at low load; if you hear grinding or rattling once it spins up, the bearing is wearing out.

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