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Compact rectangular power module with green PCB, silver heatsink, and multiple cable connectors visible

myVolts

myVolts 12V DC 300W AT Power Supply Module

SKU CH-GXF1-KZAHR

Compact 12V DC to ATX module delivers 300W with 85% efficiency and full protection for mini-ITX and 1U builds

  • TypeAT
  • 300W output powers compact builds
  • 12V DC input works with external adapters
  • Industrial solid capacitors handle 55°C operation
  • Over-current and short-circuit protection safeguards components
  • 154×35×15mm module fits mini-ITX and 1U cases

12V DC 300W AT Power Module

The myVolts module converts a 12V DC source into standard ATX voltages for compact systems. It delivers 300W output with 85% efficiency and includes 24-pin, AUX and SATA cables. Industrial solid capacitors support operation from 0 to 55°C. The board measures 154 x 35 x 15mm for tight spaces.

Builders using mini-ITX, 1U or HTPC cases

This unit suits integrators powering POS terminals, digital set-top boxes, network servers or mining rigs from a 12V 25A adapter. It is not for builders who need an AC-input PSU, who require higher wattage than 300W, or who lack a suitable external 12V power brick.

12V DC input with 25A maximum draw

The module accepts 11.4 to 12.6V DC and draws up to 25A, so the paired adapter must supply at least that current. Over-current and short-circuit protection shut down the unit safely. The package includes the module, a 24-pin to 20-pin cable, a DC input cable and an AUX cable.

Highlights

  • 300W output powers compact builds
  • 12V DC input works with external adapters
  • Industrial solid capacitors handle 55°C operation
  • Over-current and short-circuit protection safeguards components
  • 154×35×15mm module fits mini-ITX and 1U cases

Specifications

TypeAT

Questions about this item

What cables and connectors are included with the myVolts 12V DC 300W AT module, and what must be supplied separately?

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

Which capacity or version of this 12 V DC-input AT supply should be chosen for a mini-ITX build needing 300 W?

This is the only version offered: a single 300 W module with 12 V DC input (11.4–12.6 V range) and 85 % efficiency, designed for mini-ITX and 1U cases. Select it when the system’s total power draw stays within 300 W.

What does the 300 W output rating mean once the module is installed in a system with a 12 V adapter?

The module can deliver up to 300 W of combined DC power to the motherboard and drives provided the external 12 V adapter supplies up to 25 A; at full load the unit operates at 85 % efficiency within a 0–55 °C ambient range.

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