Add additional chassis cooling with a 12mm ball bearing fan This versatile 12cm PC case fan is designed to fit a broad range of computer case designs, to circulate cool air into the case, or exhaust warm air out - preventing problems due to overheating components. A quiet cooling solution, the 12cm dual ball-bearing case fan features a high efficiency blade design that's capable of moving 72.94 CFM throughout the computer case, helping to optimize system performance. This broadly compatible PC cooling solution can be powered through a simple LP4 connection to the computer power supply, and is backed by StarTech.com's 2-year warranty. The StarTech.com Advantage - A dual ball bearing design ensures reliability and longer life - Backed by a StarTech.com 2-year warranty and free lifetime technical support