Antec PSU's with Fan-only connectors

Well I have a little problem with my TrueBlue480. Since all my regular molexes are already in use, I had to resort in using the fan-only connectors to power my intake and exhaust fans.
Here's the problem: The PSU runs the connectors at 5 volts instead of 12 the fans need.
Now I understand that the PSU can adjust the fan speed by itself depending on the temperature, but is there a way to override that so they could run 24/7 at 12 volts? :/
Right now the fans barely move any air and that's not good.

why dont you just get some 4 pin Y adapters?

i have that same problem and i would really like to make use of those connectors.

Grab an Vantec Nexus fan controller and a 4 pin Y adapter. The fan controller only requires one 4 pin molex be connected to it to supply power for all 4 fans.