mini-box M4-ATX Installation Manual

M4-ATX

6-30V Intelligent

ATX Power Supply

Installation Guide

Version 1.0e

P/N M4-ATX-01

Before you start…

Please take a moment and read this manual before you install the M4-ATX in your
vehicle. Often times, rushing into installing the unit can result in serious damage
to your M4-ATX board, computer and probably your car’s electrical system. Always
double check the polarity of your wires with a voltmeter.

Avoid using the cigarette plug as a power source, often times the contacts are not
capable of delivering high current to your PC.

Introduction

Thank you for purchasing the M4-ATX power sequencer / vehicle ATX power supply.
The M4-ATX was designed to work with a wide variety of main boards ranging from low

power to fully fledged Intel, AMD or VIA motherboards.

M4-ATX Logic Diagram

GND

+

Switch Logic 6-30V DC-DC

ATX PSU

PC

ATX power

MotherBoard
ON/OFF switch

M4-ATX

Battery

Ignition SW

-

+

USB

8bit MCU

Amplifie

r

Enable

Reverse and

forward protection

Status LED

1.2 M4-

ATX

Connection diagram

Power Input Connectors (bottom, right)

Left Battery negative (GND)
Center Ignition (

To start connect to Battery +). Do not use in the standard PSU mode

(mode P0)

Right Battery positive (+)
(A) ATX Power Output Connector 20/24 pin connector

(B) 12V-ATX power output connector 4 pin
(C) Configuration dip switches

(J5) For internal use only (do not use)
(J6) Amplifier THUMP wire harness (connects to the M4-ATX pin header)
(J3) Fan Header. Positive pin is closest to “J3” marking.
(J8) USB, Motherboard ON/OFF and THUMP (Thump also available on J6)

1) GND 6) To Motherboard ON/OFF

2) GND 7) To motherboard ON/OFF

3) USB D+ 8) Amplifier Thump

4) USB D- 9) GND

5) Vcc 19 N/C (key)

J8 shown with cable harness connected to the
motherboard ON-OFF header (pin 7 and 6)

M4-ATX User

Guide Page 2