Dotcomformat

I have a MOTM based setup currently but would like to get some dotcom 
modules. My problem is that the dotcom power supply is way to 
expensive to justify when I already have power minus the 5v. I know 
there is the $12 power adaptor that arrick sells for converion but 
that's $12 a pop per module. One can get a powerone 5v PS for under 
$35 which is a much cheaper alternative and then get the dotcom power 
harness. My question mostly is about a grounding scheme for the 2 
PS's (MOTM and a seperate 5v) and also I don't see the pinouts of the 
4pin molex connector on the PS end of the dotcom power harness. Any 
ideas or solutions?

- Michael nil-x
- Pressure : Penetration