Uhmm if it was a simple search answer I wouldn't have asked here, so thanks for that!
I was able to find the configuration after slowly pooring over pictures until I finally found one where I could make out what the connection is supposed to be.
Connection should look like this
5v | 1 |
__|__|__
| 2 | 3 | <--- 10v
|___|___|
^Ground
Now I can make DC adapter and finally try out my Neo Geo CD that's been sitting around for ages.