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Compact ATX power supply unit with matte black finish and cooling fan grille

KHACHIMO

KHACHIMO 120W ATX Power Supply Replace MH 5V12V24V 80W MH-80N-R3X 80 PLUS Gold

SKU CH-JM1C-MT582

An ATX power supply delivering 120 W with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support

  • TypeATX
  • Fast wake-from-sleep with Modern Standby support
  • High efficiency 80 PLUS Gold certification lowers power draw
  • Silent Zero RPM fan mode at low and medium loads
  • Clean power from Resonant LLC topology with DC-to-DC conversion
  • 120W ATX unit replaces 80W MH-80N-R3X models

120W ATX Replacement Unit

The KHACHIMO 120W ATX power supply is a direct replacement for the MH-80N-R3X unit. It delivers 120 watts across 5V, 12V and 24V rails in a standard ATX form factor. The unit carries 80 PLUS Gold certification for high efficiency. It suits system integrators and repair technicians who need a drop-in spare.

Builders wanting silent low-load operation

Modern Standby compatibility enables extremely fast wake-from-sleep times and better low-load efficiency. Zero RPM fan mode stops the cooling fan entirely at low and medium loads for near-silent operation. Resonant LLC topology with DC-to-DC conversion reduces coil whine. This unit is not for systems requiring more than 120 watts of continuous power.

Capacity and headroom

The 120 watt rating comfortably handles typical office workstations, thin clients and embedded platforms that originally used an 80 watt supply. Headroom exists for modest component upgrades within the same power envelope. It runs out when the combined draw of CPU, graphics and peripherals exceeds the 120 watt limit.

Highlights

  • Fast wake-from-sleep with Modern Standby support
  • High efficiency 80 PLUS Gold certification lowers power draw
  • Silent Zero RPM fan mode at low and medium loads
  • Clean power from Resonant LLC topology with DC-to-DC conversion
  • 120W ATX unit replaces 80W MH-80N-R3X models

Specifications

TypeATX

Questions about this item

What motherboard power connector does the 120 W ATX unit require to turn on?

It uses the standard 24-pin ATX main connector and a 4- or 8-pin CPU power plug, both keyed so they only fit one way.

Will the Modern Standby feature work with a motherboard that only supports traditional S3 sleep?

Yes, the supply is backward compatible; it will power a legacy board normally but fast wake and low-load efficiency gains require a Modern Standby-capable platform.

How can I confirm the Zero RPM fan mode is active after the PC boots?

At idle or light load the fan stops completely — listen for silence and watch the blades; they should remain still until the load rises above the internal threshold.

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