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Green rectangular PCB with 24-pin ATX connector, four voltage output terminals, power switch and indicator LEDs

myVolts

myVolts XH-M229 ATX 24-pin benchtop power adapter board

SKU CH-NPRH-0A3CP

A compact 24-pin ATX breakout board delivering 3.3V, 5V, 12V and -12V rails with individual 20A fuses for embedded development

  • TypeAT
  • Quick access to four voltage rails: 3.3 V, 5 V, 12 V and -12 V
  • Built-in power switch and LED indicator for simple bench control
  • Each rail protected by a replaceable 20 A glass fuse
  • Ground binding posts on every output for secure connections
  • Compact 128 × 48 × 30 mm board fits tight workspaces

ATX 24-pin benchtop adapter board

This adapter board connects to a standard ATX power supply through a 24-pin connector and breaks out four regulated voltage rails for bench use. It is designed for developers and hobbyists building embedded systems who need quick access to 3.3 V, 5 V, 12 V and -12 V without soldering. The board measures 128 by 48 by 30 mm and weighs 65 g. An onboard power switch and indicator LED simplify operation during testing.

Four fused output channels with ground posts

Each of the four voltage rails is protected by a replaceable 20 A glass fuse and provides a dedicated ground binding post for secure connections. This arrangement lets you wire multiple sub-circuits independently while keeping the power supply safely enclosed. The fused design reduces the risk of accidental shorts damaging the host power supply or the prototype hardware during development.

Single 24-pin ATX input requirement

The board draws all power from one 24-pin ATX connector and is compatible with partial BTX-type supplies. It cannot operate from a standalone wall adapter or a supply lacking the full 24-pin pinout. Builders who need isolated or adjustable voltages, or who do not have an ATX power supply available, will need a different bench power solution.

Puntos fuertes

  • Quick access to four voltage rails: 3.3 V, 5 V, 12 V and -12 V
  • Built-in power switch and LED indicator for simple bench control
  • Each rail protected by a replaceable 20 A glass fuse
  • Ground binding posts on every output for secure connections
  • Compact 128 × 48 × 30 mm board fits tight workspaces

Especificaciones

TypeAT

Preguntas sobre este artículo

When will the 20 A glass fuses on each output channel need replacement?

Replace a fuse only after it blows from an over-current event; each channel has its own 20 A fuse so only the affected rail requires a new fuse.

What limits continuous current draw on the 12 V, 5 V, 3.3 V and -12 V rails?

Each rail is protected by a 20 A glass fuse, so sustained current above 20 A on any rail will open that fuse first.

How much heat or noise does the XH-M229 board add when running all day?

The board itself has no fan or active components; all heat and noise come from the ATX supply powering it.

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