I bought a fan last week that is powered by USB (it was on clearance). I was thinking there is no way 5 volts at half an amp is going to make a fan that puts o

I bought a fan last week that is powered by USB (it was on clearance). I was thinking there is no way 5 volts at half an amp is going to make a fan that puts out any kind of decent airflow. But it works pretty darn well to my surprise. They are getting better at making low voltage devices. The great thing is next time we lose power here for a week, I won't be overheating.