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Small rectangular power module with 24-pin ATX cable and DC input lead

myVolts

myVolts 120W AT Power Supply Module with 24Pin ATX/DC Cable

SKU CH-4KZ9-MBHY9

Compact 120W AT module converts 12V DC to ATX power for mini PCs, HTPCs and servers, with over-current and short-circuit protection

  • Product typeAT
  • 120W output powers compact systems efficiently
  • 12V DC input requires matching adapter for operation
  • Industrial solid capacitors resist heat up to 55°C
  • Over-current and short-circuit protection safeguards components
  • 24-pin ATX cable enables direct plug-and-play installation

Compact AT power module for space-constrained builds

The myVolts 120W AT module delivers DC-to-ATX conversion for mini PCs, HTPCs, POS terminals and similar low-power systems. It accepts a 12 V DC input and supplies up to 120 W through a 24-pin ATX cable. An external 12 V adapter is required and is not included.

Thermal and electrical behaviour

Rated efficiency reaches 90 % under normal load, limiting waste heat inside tight chassis. The unit operates from 0 to 55 °C and 45 to 75 % humidity, while industrial solid capacitors provide high-temperature resistance. Over-current and short-circuit protection guard connected components.

Included cables and their effect

A 24-pin to 20-pin adapter cable and a DC input cable ship in the box, enabling direct connection to both modern and legacy motherboards without extra purchases. The board measures approximately 120 x 28 x 20 mm, so it fits ITX cases and similar enclosures. Buyers needing higher wattage or an integrated AC inlet should look elsewhere.

How it compares

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

Price $25.99
Cheaper than about 95% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeAT

Questions about this item

How do I install the module and connect the 24-pin ATX cable without bending pins?

Mount the 120 x 28 x 20 mm board in the chassis, plug the 24-pin ATX cable straight into the motherboard header, then attach the DC input cable to a 12 V adapter within the ±5 % tolerance.

What maintenance or replacement will the industrial solid capacitors need over time?

The solid capacitors are rated for high-temperature resistance up to 55 °C operating temperature; no scheduled replacement is required unless the unit exceeds its 0–55 °C working range.

At what point does the 90 % efficiency limit cause thermal throttling under sustained load?

Continuous 120 W output at 90 % efficiency generates 12 W of heat; if chassis airflow cannot keep the module below 55 °C, the over-current and short-circuit protections will activate first.

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