It's a standard ATX connector as far as I am aware with the same pinouts. So should have both +12V and -12V if it is fully wired, on yellow and blue cables respectively.

The hashing boards are directly wired to the 12V supply. If your controller board has blown (or that little ATX adapter), I would put it down to running the fan through it. It's quite a high current fan, would have been more sensible to hook it straight to the 12V power supply