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Compact 1U ATX power supply unit, matte black metal enclosure with fan grille and cable bundle

KHACHIMO

KHACHIMO PCM-621-9904010 120W ATX Power Supply

SKU CH-ABKN-27G81

A 120 W ATX power supply with 80 PLUS Gold efficiency, Zero RPM fan mode and resonant LLC topology for quiet, efficient operation

  • Product typeATX
  • Fast wake-from-sleep with Modern Standby support
  • Lower power draw and cooler temps via 80 PLUS Gold
  • Near-silent operation with Zero RPM fan mode
  • Clean, stable power from resonant LLC and DC-to-DC design
  • Compact 1U form factor fits small chassis builds

Compact 120W ATX power supply

The KHACHIMO PCM-621-9904010 is a 120 watt ATX switching supply built for small-form-factor systems such as 1U servers or thin clients. Its low output suits basic office workloads, embedded appliances or secondary machines that do not demand discrete graphics power.

120 watt capacity with Gold efficiency

The 120W rating handles integrated graphics platforms and modest component counts, while 80 PLUS Gold certification keeps waste heat and fan noise low at typical loads. Heavy multi-core workloads or add-in cards will exceed the available headroom, so the unit is not intended for gaming or workstation builds.

Resonant LLC topology and zero-RPM fan

Resonant LLC with DC-to-DC conversion delivers clean power and reduces coil whine, while Modern Standby support enables rapid wake from sleep. A zero-RPM fan mode stops the fan entirely at low and medium loads, offering near-silent operation in noise-sensitive environments.

How it compares

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

Price $252.99
Pricier than about 72% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeATX

Questions about this item

Will the PCM-621-9904010 power a legacy motherboard with a 24-pin ATX connector?

Yes, the unit is an ATX-type supply and provides the standard 24-pin main connector for older boards.

How can I verify the Zero RPM Fan Mode is active after installation?

Under light load the fan stops spinning completely; you can confirm silence visually or with a fan-speed monitor in BIOS or software.

Does the box include modular cables or must I purchase them separately?

The 120W unit ships with fixed cables attached; no extra modular cables are required or available for this model.

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