Have you ever been working at your computer or laptop and felt a little hot? Being hot and uncomfortable makes working hard and you are less productive. I’ve had this happen to me on numerous occasions. Thermaltake has just the thing for this problem; they call it the Mobile Fan 12. It is a 12cm fan that sits on your desk and is powered by USB; there is even a speed control knob. Let’s take a look and see if this product is worth the $19.99 price tag.