This fan may cosmetically cool the outer casing of your laptop, but claims that it actually cools the processor are totally bogus.I have a Gateway laptop that I use for very compute-intensive workloads that can run from hours to days. Running the processor for that long can cause thermal shutdowns, so I rigged together a $10 solution using blocks and a fan. It was unwieldly, but it worked. I thought the Targus would be a better solution, since it claims to be designed for just this sort of thing. The weak fans cool the outer casing, but does nothing for the processor, because the thermal shutdowns returned.If you want to cool your lap, this may work fine. If you want to cool your actual computer, look elsewhere.