Excerpt: Having owned and used several diffrent brands of laptop computers, they all have had one common trait: they all produce heat when operating, and we know that excessive heat can exert a damaging influence on the computers internal parts (hardware). Therefore it is highly desireable (I believe necessary) to provide a mechanism to dissipate this excess heat. This Zalman notebook cooler performs the desired function, and in a very quiet manner.
Summary: The large fan does provide a nice breeze over a large area, and it is very very quiet. I just wish the fan speed was higher for extra cooling. If you use your laptop a lot as I do, then you might want something with a stronger fan, I know I do.
Summary: I bought this for my 17" laptop. It works great! The fan is extremely quiet, but very effective. The previous fan I had was not properly cooling the left side of the laptop. That is the spot that gets the hottest on my laptop. This fan keeps that area cool, no matter how long the laptop has been in use. There is one big fan in the center that evenly distributes the cool air, so the whole laptop stays cool.