GND
+
Switch Logic
6-24V DC-DC
ATX PSU
PC
ATX power
Mother Board
ON/OFF switch
M3-ATX-HV
Battery
Ignition SW
-
+
Serial ctlr
8bit MCU
Amplifier
Enable
Reverse and
forward protection
Status LED
M3-ATX-HV
6-34V Intelligent ATX Power Supply
Installation Guide
Version 1.0c
P/N M3-ATX-HV-01
Before you start…
Please take a moment and read this manual before you install the M3-ATX-HV
in your
vehicle. Often times, rushing into installing the unit can result in serious damage
to your M3-ATX-HV 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 M3-ATX-HV power sequencer / vehicle ATX
power supply.
The M3-ATX-HV was designed to work with a wide variety of main boards such
as the VIA mini-ITX motherboards as well as Pentium-M / Celeron or full power
Pentium systems.
M3-ATX-HV Logic Diagram
1.2 M3-ATX-HV
Connection diagram
(M3-ATX pictured, electrically identical with M3-ATX-HV)
