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Small black rectangular circuit board with 24-pin ATX connector and 12V AUX input, fanless design, polymer capacitors visible

myVolts

myVolts DC-ATX 24-pin to 12V AUX Power Supply

SKU CH-N307-0B82T

Fanless ATX-to-12V AUX converter accepts 16–24 V DC input and delivers 3.3 V, 5 V and 5 VSB rails with over-voltage and short-circuit protection

  • Product typeAT
  • Silent operation with fanless design
  • Compact 155×35×20 mm module fits mini-ITX builds
  • Overvoltage protection triggers at 1.5× rated output
  • circuit protection shuts down output on fault
  • Polymer capacitors on PCBA for extended service life

Fanless DC-ATX Power Module

The myVolts DC-ATX module converts a 16 V to 24 V DC source into standard ATX voltages for mini-ITX motherboards. It accepts up to 12 A at 19 V and delivers 3.3 V, 5 V and 5 V standby rails with 85 percent efficiency. A polymer-capacitor PCB and completely fanless construction give silent, long-life operation.

Builders Using DC Input for Small Boards

This unit suits integrators powering a mini-ITX board from a 19 V laptop-style brick or similar DC source. It is not for builders who need an AC-input PSU, who require 12 V CPU or PCIe power connectors, or who need more than 10 A on the 3.3 V rail.

Protections and Silent Running

Overvoltage protection shuts the output down at 1.5 times the rated voltage, while short-circuit protection cuts power instantly on a fault. The fanless design eliminates noise entirely, and the solid polymer capacitors extend service life in harsh environments.

How it compares

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

Price $44.99
Cheaper than about 92% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeAT

Questions about this item

What DC input voltage and current must my power source deliver for this ATX module to run?

The module accepts 16 VDC to 24 VDC and draws up to 12.0 A at 19 VDC input.

Will the 24-pin ATX connector on this unit power a legacy motherboard that still needs -5 V or -12 V rails?

This module provides only +3.3 V, +5 V, +5 VSB and +12 V outputs; it does not generate -5 V or -12 V rails.

How can I verify the module is regulating correctly after I connect it?

Measure the outputs: +3.3 V should read between 3.14 V and 3.47 V, +5 V and +5 VSB between 4.75 V and 5.25 V, each with ≤ 50 mV ripple.

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