Realize that that 4-prong connector is auxilliary 12v power.Originally Posted by jbyers
I wouldn't expect a M1-ATX to power that.
I purchased an M1-ATX and was going to buy a VIA micro motherboard. I realized that I had a shuttle PC in a closet and decided to use it. I ran it in the house on the original power supply and got everything set up. After installing in the car I powered it up and the fans turn but the PC does nothing. I can plug in the old power supply and all runs. Its a p4 style board running a celeron 1.8 ghz cpu. It has that damn alternate 4 prong power connector for which I bought the adapter to come off a molex for. Is there a way to get the M1-ATX to run this board. The PC has only a 2.5 inch drive and a USB GPS connected. Im sure it has the power!! Just is the power in the right place?? Any help would be appreciated!!!