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Small green circuit board with 24-pin ATX connector and DC input cables

myVolts

myVolts 300W Power Supply 12V DC ATX Module

SKU CH-DY6P-963SD

Compact ATX module converts 12 V DC to 300 W with 85 % efficiency, full protection and 24-pin cable for mini-ITX or 1 U builds

  • Product typeAT
  • 300 W output powers compact systems
  • 12 V DC input with 11.4–12.6 V range simplifies wiring
  • 85 % efficiency reduces heat in tight cases
  • Industrial solid capacitors withstand 55 °C operation
  • 24-pin ATX cable plus 20-pin adapter enables plug-and-play install

Compact 300W ATX module for mini-ITX builds

This 12V DC input power supply module delivers 300W output for mini-ITX and 1U chassis applications. It targets builders of HTPC, POS terminals, digital set-top boxes and similar compact systems. Industrial solid capacitors provide high temperature resistance and stable operation between 0 and 55 degrees Celsius.

Direct 24-pin ATX connection with included cables

Installation uses the supplied 24-pin to 20-pin cable, DC input cable and AUX cable for plug-and-play setup. The module requires a separate 12V DC adapter capable of at least 25A input current. Builders must verify adapter capacity and cable routing in tight 154 x 35 x 15mm board dimensions to avoid airflow obstruction.

85% efficiency ceiling and 12V DC input constraint

The unit accepts 11.4 to 12.6V DC input and converts it at up to 85% efficiency, limiting practical output under sustained load. Overcurrent and short-circuit protection safeguard connected components. Systems needing higher input voltage ranges, redundant supplies or ATX12VO native support fall outside this module's design scope.

How it compares

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

Price $48.99
Cheaper than about 91% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeAT

Questions about this item

How do I verify the 300W 12V DC ATX module is working after connecting the 24-pin cable?

After wiring the 24-pin ATX cable to the motherboard and the DC input cable to a 12V source, the board should power on without triggering the overcurrent or short-circuit protection. Stable voltages on the 24-pin rails and no shutdown under load confirm correct operation.

What cables and accessories are included, and what must be sourced separately?

The box contains the 300W module, a 24-pin to 20-pin ATX cable, a DC input cable and an AUX cable. A 12V DC power adapter capable of at least 25A is not included and must be purchased separately.

Which version should I choose for a mini-ITX or 1U chassis?

The single 300W 12V DC input model with the 154×35×15 mm board is designed for mini-ITX and 1U cases; no other capacities or form factors are offered in this listing.

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