Powering a CPU fan from 5v USB power?

[fatboyslimerr]

Planning some modifications to my already modified laptop cooling solution and I'm wondering if a CPU cooler would run off a 5v usb cable? Probably this cooler http://www.overclockers.co.uk/showproduct.php?prodid=HS-085-AK&tool=3

Would I need any resistors or anything? Fan speed control is not critical at first, just wondering if the fans would spin sufficiently fast enough for some cooling at 5v.

Thanks

 

[Ra_V_en]

Cant imagine how would you manage to put it into the laptop, noneless you will have to make some adapter molex-> usb or pin3/4 -> usb. Other thing is that 5v from usb... even it should be enough to start it spinning the efficiency will be minor. You wont need any resistor... the oposite you would like to have a converter from 5->12V to get it working better... but that's not really brightest way to achieve the effect.

 

[fatboyslimerr]

I would just strip the CPU cooler fan pin to the bare wires and solder to the wiring of the usb cable (that I already have powering two fans).