The ARCTIC F TC is a temperature controlled case fan keeping your computer temperature at optimal level without any further setup or monitoring No need to setup – it simply works The ARCTIC F TC controls its speed by itself Thanks to the temperature sensor simply install the fan & no further adjustments or setup is required The fan controller is set to keep the temperature between 32°C & 38°C When the temperature is below 32°C the fan spins slowly & silently If the temperature continues to rise the fan speed will increase to deliver a maximum airflow & in turn cooling the PC more efficiently Efficient cooling Equipped with nine blades to efficiently create high airflow & static pressure the ARCTIC F TC fan is perfect for PC case ventilation in addition the fluid dynamic bearing extends service life of the fan Optimal Flexibility The temperature sensor of the fan is installed on a 40cm cable This gives you great flexibility to install the sensor in a spot that emits most heat Ideally the sensor is installed at the top of the PC case since the temperature is highest in this area Also the fan can be installed from both directions blowing air into your PC case or sucking it out