Thanks for all the helpful information fellow car Geeks!
I just purchased the same m4-atx and I'm having hard time figuring out how to connect this thing. (First time carPC build, I'm ashamed to say!)
I'm looking for clarification on 5 pin connector and such.
The instructions were indeed horrific for a first timer!
I can connect the essentials and get it going. Being more cautious than any thing!