Thread: Two PSUs at once?

As I have said many times in here- I am still pretty new to the art of building a computer into a car but I've been building computers in other things (sometimes regular cases) for years.

Using 2 separate power supplies in a computer was actually not uncommon a few years back: when scsi and then IDE RAID became somewhat popular with hobbyist types, but power supplies were still small. Add overclocking to that, and the need for many fans at times....

And connecting the green and a ground was the way we did it- soldering for a permanent connection, or with part of a paperclip for temporary use.

I do not know any reason to think this would be a problem in an automotive environment- you'll still have ignition power to turn the unit on/off, so won't drain the battery.

Should be fine, I'd think.

I was almost positive that that was the case, thank you very much for the re-assurance.

Here's some stuff that people went through last year, applying similar ideas to the M2ATX.
I don't see why it wont work with a M2 and a M1.

two M2ATX

Sweet, thank you as well h3rk, that is exactly what I am looking to do

Thanks MatrixPC,

What do you mean by cross?
Can you give me an example?

Thanks

Oh wow, alright thanks. I will just be using the voltage from the M1 for USB and other external devices.

Originally Posted by MatrixPC

...

Again this is just an example but what exactly going on within the mobo is I don't know.

I think this illustrates what is technically going on when you cross them, the reason for precaution, and the only known exception.