i need to power 2 60mm fans with a usb cable

[shnot]

i'm going to cut and rout out holes in my desk to fit 2 60mm fans so i can cool off my laptop when it's on my desk. i don't want to buy a laptop cooler tray thing because i'm cheap, and i've already got fans and broken usb peripherals to get the cable from. i know you can do it because most laptop coolers are usb powered. i need to know what part of the usb cable conducts the power to the fans. help?

[Wiggo]

The voltage of USB ports is only 5v which in some cases isn't enough to start a fan let alone run one at anywhere near full speed.

[shnot]

:thumbs do

what voltage would i need to pull off? how many batteries do i need?

[Wiggo]

8 x 1.5v batteries to get to 12v but they'd likely not last long. Better to get a 12v transformer with enough ampage to run them.

[Wordbiker]

You might try something like this. I'm sure there are other fans that run natively on 5V as well. I like the USB idea. Very convenient :thumb:

[The__tweaker]

Somehow I don't like the idea of straining the usb power to it's limit. But I agree it would be very convenient.. :)

[amd_man2005]

Somehow I don't like the idea of straining the usb power to it's limit. But I agree it would be very convenient.. :)

I agree

[Wordbiker]

Wimps...:p