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Compact AT power module, green PCB with 24-pin ATX cable, black DC input lead, silver solid capacitors, 154 by 35 mm

myVolts

myVolts 300W AT Power Supply Module 12V DC Input 24Pin

SKU CH-NDFR-1PNJB

A 300 W AT power module that accepts 12 V DC input and delivers power through a 24-pin ATX connector with over-current and short-circuit protection

  • TypeAT
  • 300W output powers compact systems efficiently
  • 12V DC input works with external adapters
  • Industrial solid capacitors withstand high temperatures reliably
  • Over-current and short-circuit protection guards connected hardware
  • 24-pin ATX cable enables direct plug-and-play installation

Compact AT Power Module for Small-Form Systems

This 300W AT power supply module accepts a 12V DC input between 11.4 and 12.6V and delivers power through a 24-pin ATX connector. It is built for mini-ITX and 1U chassis where space is tight and a compact DC-to-DC solution is required. Industrial solid capacitors provide high temperature resistance and stable operation. The module suits embedded PCs, HTPCs, POS terminals and similar low-profile deployments.

Plug-and-Play Install with External Adapter Needed

The board measures approximately 154 x 35 x 15mm and includes a 24-pin to 20-pin cable, a DC input cable and an AUX cable for direct connection. Installation is straightforward: connect the supplied cables and plug into the motherboard. The unit requires a separate 12V DC power adapter capable of at least 25A input current; without it the module will not function. Over-current and short-circuit protection guard the system during wiring mistakes.

Steady 85% Efficiency Under Continuous Load

Rated at 300W output with 85% power efficiency, the module is designed for sustained operation in environments from 0 to 55°C and 45% to 75% humidity. Solid capacitors maintain reliability during extended use in mining machines, servers or digital signage players. It is not suited for builds that need ATX-standard AC input or higher wattage headroom for multi-GPU configurations.

Highlights

  • 300W output powers compact systems efficiently
  • 12V DC input works with external adapters
  • Industrial solid capacitors withstand high temperatures reliably
  • Over-current and short-circuit protection guards connected hardware
  • 24-pin ATX cable enables direct plug-and-play installation

Specifications

TypeAT

Questions about this item

How can I confirm the 300W AT module is running correctly once it is installed?

The unit powers a mini-ITX or 1U board through the 24-pin ATX cable; stable operation with no shutdowns indicates the over-current and short-circuit protections are working.

What ships with the module and what must I source separately?

The box contains the 300W module, a 24-pin to 20-pin cable, a DC input cable and an AUX cable; a 12V DC power adapter capable of up to 25A is not included.

Which capacity should I choose for a compact build needing 300W from 12V DC?

This single 300W model accepts 11.4–12.6V input, delivers 85% efficiency and fits mini-ITX or 1U cases measuring approximately 154×35×15mm.

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