A fan located inside a computer case generally attached to the front and/or back of the computer that helps bring air into the case and also take hot air out of the case. Computer case fans are available in a wide variety of sizes, however 80mm, 92mm, and 120mm (12cm) with a width of 25mm are the most commonly used case fans in a computer. Below is a graphic example of what a computer case fan may look like. 
Also see: Case, CFM, dBA, Fan, RPM | |
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