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External Cooling Fan powered by USB 2.0

I have a desktop installed under a desk in a wall unit. We are going to cut two ventilation openings to enable convection circulation. I would like to put a small fan inside the case to blow air out (and pull cooler air in). And I would like to have the fan turn on and off with the computer.

Is there any sort of fan that could draw its power from a USB 2.0 connection? Since the USB 2.0 can charge an iPod or Blackberry, I should be able to cut the end off of a USB 2.0 cable, solder on a connector, and then connect a box fan.  I will make sure that the fan matches the voltage of the USB 2.0

I have several internal fan kits that cool hard drives.  I would use one of those fans.

I would rather not run a wire into the case.

Thanks.


Larry
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Callandor
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Doesn't it already have a case fan. You can buy an AC fan to mount in your ventilation hole and plug it in the power point.

Chris B
Or to go with your point of turning it on with the pc, use a case fan plugged into a molex connector in the pc, but mounted externally in your vent hole. Any fan mounted in the pc is only going to move the air around which is already in there, it won't draw air in from outside the larger enclosure.

Chris B
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tfjeff: Now That's a nice little piece of hardware.   : )
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computerlarry,

were these what you were looking for?

waffle
Thank you much.    : )