Good question Delirium,but I believe you ment to say Hey i wanna build a grow box and use computer fans for cooling and exhaust,but how would i power said fans up given they are out of a pc?And i would like to know also,good question now our very own power heads will get back to us,
FYI
I have it on good authority we may soon be getting a much needed Step By Step tutorial forum, which I think will be appreciated for occasions such as this.