How do I get around the 120mm Fan power issue?
I was wanting to make a laptop cooler and i have a few ideas;
1) Use a mains cable (12v jobby) and connect the 120mm fan to it
2) Battery pack (what batteries and is this feasible?)
3) USB (im pretty sure a 12v fan cannot be powered by a 5v usb socket)
What are the requirements to power a 120mm fan i.e. which is the most feasible?