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Green rectangular circuit board with 24-pin ATX socket, four binding post pairs, toggle switch and indicator LED

SMUGDESK

SMUGDESK XHM229 ATX 24Pin Power Adapter Board

SKU CH-5EF3-76FMG

Converts a standard ATX supply into a bench source with 3.3V, 5V, 12V and 12V binding-post outputs, each fused and switched

  • Converts ATX supply to bench power via 24pin input
  • Four binding-post outputs deliver 3.3V 5V 12V 12V for testing
  • Independent replaceable fuse per channel protects against overcurrent
  • Built-in LED indicator and toggle switch show status and cut power
  • Compact PCB with mounting holes fits workbench or enclosure

Purpose and Audience

The SMUGDESK XHM229 is an ATX breakout board that converts a standard 24pin desktop power supply into a bench-style DC source. It is aimed at electronics hobbyists, repair technicians and students who need adjustable test voltages without building a dedicated lab supply.

Protection and Control

Four independent glass fuses protect the 3.3V, 5V and dual 12V binding-post outputs from short-circuit and overload damage. A built-in LED shows when the unit is live and a toggle switch cuts output without unplugging the ATX connector.

Deciding Specification

The board provides exactly four fixed rails at 3.3V, 5V, 12V and 12V from a single 24pin ATX input. Buyers who need variable voltage, higher current per rail or additional rails such as -12V or 5VSB should look elsewhere.

Highlights

  • Converts ATX supply to bench power via 24pin input
  • Four binding-post outputs deliver 3.3V 5V 12V 12V for testing
  • Independent replaceable fuse per channel protects against overcurrent
  • Built-in LED indicator and toggle switch show status and cut power
  • Compact PCB with mounting holes fits workbench or enclosure

Specifications

No published specifications for this item yet.

Questions about this item

How do I connect the SMUGDESK XHM229 breakout board to my ATX power supply, and what step is often missed?

Plug the 24pin ATX connector into the board socket, then use the shorting jumper on the PS_ON pin to enable the power supply; forgetting this jumper leaves the board dead.

What maintenance will the XHM229 need over time?

Each output channel has an independent replaceable glass fuse; swap a blown fuse with the same rating to restore protection.

What limit appears first when running the board continuously?

The current capacity of each channel's glass fuse is the first limit; sustained loads above its rating will blow the fuse and cut power.

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