I work from a laptop mainly and when I'm running a lot of programs all at once my laptop can get pretty warm. I finally decided to get an external cooling fan and couldn't be more happy with it. Whenever I do things like render HD videos for clients my laptop kicks into high gear and the fan speed kicks up. Out of curiosity I decided to render a video and watch how hot the internal temperature got without using the fan and then re-rendered the same video with the cooling fan. I was able to drop the temperature by 10-15 degrees Celsius which is around 40 degrees F using the cooling. The internal temperature dropped to normal range more quickly and I'm not burning my leg anymore too. If you don't know, high temps kill laptops more quickly and can cause internal components to wear out more quickly as well. This is what I bought: https://www.amazon.com/Tenswall-Cooling-Portable-Ultra-Slim-Notebook/dp/B074V75DG5 It is powered by USB, you simply plug it in to your USB port and it allows you to adjust the fan speed and comes with some cool red LEDs. There are 2 USB ports on the fan so you get back the one you're giving up for the fan.