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Compact silver circuit board with 24-pin ATX and SATA cables, 154 by 35 mm

myVolts

myVolts 300W 12V DC AT Power Supply Module

SKU CH-QKYB-BFXSR

A compact 300 W AT power module converting 12 V DC input to standard PC voltages for mini-ITX and 1U cases

  • TypeAT
  • 300W output powers compact systems efficiently
  • 12V DC input with 85% efficiency reduces energy waste
  • Industrial solid capacitors withstand 0–55 °C operation
  • Over-current and short-circuit protection safeguards components
  • 154×35×15 mm module fits mini-ITX and 1U cases

12V DC 300W AT module for Mini-ITX

This 300W AT power supply module accepts a 12V DC input between 11.4 and 12.6V and delivers up to 25A input current. It is designed for Mini-ITX and 1U chassis where an external adapter provides the DC source. Industrial solid capacitors support operation from 0 to 55°C with 85% efficiency.

Bundled 24Pin 20Pin AUX and DC cables

The package includes a 24Pin to 20Pin ATX cable, an AUX cable and a DC input cable for direct connection to the module board. These cables enable plug-and-play installation in compatible systems without sourcing separate wiring. No SATA power cables are mentioned in the supplied contents.

Suits compact PCs needing DC-to-ATX conversion

This module fits builders converting a 12V DC brick into standard ATX rails for HTPC, POS, thin client or mining rigs in tight enclosures. It is not for builders who require an integrated AC inlet, ATX form factor dimensions, or native SATA power connectors for multiple drives.

Highlights

  • 300W output powers compact systems efficiently
  • 12V DC input with 85% efficiency reduces energy waste
  • Industrial solid capacitors withstand 0–55 °C operation
  • Over-current and short-circuit protection safeguards components
  • 154×35×15 mm module fits mini-ITX and 1U cases

Specifications

TypeAT

Questions about this item

Will the industrial solid capacitors on the 300W module need replacement after long-term use?

Industrial solid capacitors are rated for high temperature resistance and stable operation, so they do not require scheduled replacement under normal conditions.

What is the first limit reached when the unit runs continuously at full load?

The 12V DC input is capped at 25A, so the supply cannot draw more than 300W even if the load demands it.

How much heat and noise does the module produce inside a 1U case during all-day operation?

With 85% efficiency and no onboard fan, the board relies on case airflow; at 300W load it dissipates roughly 45W as heat and adds no acoustic noise of its own.

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