Micro growing in a pc case

[kazaazak]

You would need to splice the wires and match up polarity. Usually if you get polarity wrong the fan just wont power up. So you'd pretty much know if you have it wired right. Other times though you have to be careful because if you get polarity wrong, you'll ruin your adapter.

YouTube - Hack your AC adapter what do you think of that way of powering the fan