Where on the ipac is the 5v part? I don't see it...
I'll try not to be condescending, but here's how I found the information you seek. This is the technique that you should use when searching for information on the Internet. It's a basic skill that you need to develop.
1) I used Yahoo to search for ipac. Google will work as well. That returned a bunch of hits that don't apply. I then did a search for "ipac gaming", and saw that one of the returned hits on the first page was for Ultimarc, which I happened to know was the proper site, but which just about anyone should be able to guess is the correct site from the returned hit information from Yahoo/Google.
2) I went there and could see that they were the manufacturer of the Ipac boards. They don't have an obvious link for Support like most sites do (boo, hiss), but they do have links under the Ipac header at the top of the page. I clicked on the option for "Instructions". That brought me to the page that includes the pin-outs for the header on the board.
I would give you a link to the actual page, but you need to learn how to do the above so I at least give you the step-by-step on how to get there. You can also shortcut it by doing a search for ultimarc if you like.
Really, it wasn't hard to do.
Bunsen