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XH-M229 Desktop ATX Power Supply Adapter Board with Output and Terminal Modules

$14.80 USD

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XH-M229 Desktop ATX Power Supply Adapter Board — Output & Terminal Modules

The XH-M229 converts a standard 24-pin ATX computer power supply into a regulated bench power supply with colour-coded screw terminal outputs (+3.3V, +5V, +12V, −12V, +5VSB). Ideal for electronics prototyping, CNC machine power, LED driver testing, and DIY lab bench power supply builds.

Technical Specifications

Parameter	Value
Input Connector	24-pin ATX
Output Voltages	+3.3V, +5V, +12V, −12V, +5VSB
PS_ON Control	Onboard switch (no motherboard needed)
Power Good LED	Yes
PCB Material	FR4, 1.6mm
Certification	RoHS

ATX Rail Reference

Rail	Voltage	Typical Use
+3.3V	3.3V DC	Logic, MCU, FPGA I/O
+5V	5V DC	Arduino, USB, 5V logic
+12V	12V DC	DC motors, CNC steppers, LED drivers
−12V	−12V DC	Op-amp dual supply, RS-232
+5VSB	5V DC standby	Always-on low-power circuits

Typical Applications

DIY Bench Power Supply: Convert a recycled ATX PSU into a multi-rail bench supply — cheaper than commercial bench PSUs with equivalent current
CNC Machine Power: +12V and +5V for stepper drivers (A4988, DRV8825) and spindle controllers
Arduino & Raspberry Pi: Stable +5V/+3.3V for multi-board setups requiring more current than USB
3D Printer Power: Power heated bed, hotend, and control board from a single ATX PSU
LED Driver Testing: High-current +12V for LED strip and driver module testing

FAQ

Q: Works with any ATX PSU?
A: Yes — any standard 24-pin ATX supply. Output current is limited by the PSU rating.

Q: Can I power a 12V CNC stepper driver?
A: Yes. Connect +12V terminal to VM and GND to common ground. Verify PSU +12V rail current exceeds total stepper demand.