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Compact green PCB power module with 24-pin ATX and SATA connectors

myVolts

myVolts 300W 12V DC Input ATX SATA Power Supply Module

SKU CH-QMBJ-QZ5NH

Delivers 300 W from a 12 V DC source to ATX and SATA devices in compact builds

  • TypeAT
  • Delivers 300W from a compact 12V DC source
  • Industrial solid capacitors ensure stable high-temperature operation
  • Built-in over-current and short-circuit protection safeguards hardware
  • 24-pin ATX and SATA cables enable direct plug-and-play
  • Fits mini-ITX and 1U cases with 154 × 35 mm board

Compact DC-to-ATX module for tight builds

The myVolts 300W unit converts a 12V DC source into standard ATX rails for Mini-ITX and 1U chassis. It targets embedded PCs, HTPC units, POS terminals and network appliances that run from an external adapter. Builders needing internal AC-DC conversion or redundant server supplies should look elsewhere.

300W continuous output with 85% efficiency

The board delivers up to 300W across ATX, SATA and auxiliary connectors while drawing a maximum of 25A from the 11.4-12.6V input. Industrial solid capacitors maintain stable voltage under load. Headroom disappears quickly with multiple drives or high-power add-in cards, so total system draw must stay well below the rating.

Fanless design runs 0-55°C at 85% efficiency

With no moving parts the module adds no acoustic noise; heat is dissipated through the 154 x 35 x 15mm PCB and case airflow. At full load the 15% loss appears as warmth, so enclosure ventilation matters. The unit is rated for 45-75% humidity in operation and survives -40 to 70°C in storage.

Highlights

  • Delivers 300W from a compact 12V DC source
  • Industrial solid capacitors ensure stable high-temperature operation
  • Built-in over-current and short-circuit protection safeguards hardware
  • 24-pin ATX and SATA cables enable direct plug-and-play
  • Fits mini-ITX and 1U cases with 154 × 35 mm board

Specifications

TypeAT

Questions about this item

Will the 12V DC input work with my existing 12V power adapter rated above 25A?

The module accepts 11.4 to 12.6V DC and draws up to 25A, so any 12V adapter that can supply at least 25A continuously will power it.

How can I verify the 85% efficiency and protection features are active after installation?

Measure input and output power under load; the over-current and short-circuit protections engage automatically when limits are exceeded.

Does the package include the 12V power adapter or only the module and cables?

The box contains the 300W module, a 24-pin to 20-pin ATX cable, a DC input cable and an AUX cable; a 12V power adapter must be purchased separately.

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