1、3700rpm: 12cm PC cooling fan at 3700rpm for fast cooling and glossy running of your case, ABS material for long time use. 2、High Performance: Computer fan has higher air flows for improved cooling performance and special high outline fan blades. 3、4 Pin Power Connector: 4 pin power connector with wires for 12 V power (red wire), ground (black wire) and FG signal or measured speed (yellow wire) 4、Scope of Application: The fan is designed for projects that require cooling or ventilation, ideal replacement for cooling small PC cases such as for cases, gaming PC and mining machines, server CPU cases, chassis, camera servers, power supplies, inverters, car amplifiers and other electronic equipment and components 5、Easy to Install: Computer fan is easy to install and change operation, even if the connection is wrong, the fan will not burn, but just not work.