PC Fan ARCTIC F8 PWM Black:This ARCTIC F8 PWM Black is a very powerful PC fan that is ready to correct the airflow of your computer. The computer fan will suit those who do not want to be disturbed by coloured radiation from the PC in the night hours, because this model does not have any backlighting. Another plus is the the lower cost of the fan. This 80 mm fan size makes it easy to fit into all popular PC case formats. A key parameter is also the operating voltage, which in this case is 12 V. There is one fan in this package. ARCTIC F8 PWM Black PC Fan Key Features The airflow of 31 CFM is sufficient for decreasing the temperature in your PC Distinctive and original design The quality fan holds special bearings for prolonged usage Operating voltage: 12 V The ARCTIC Fan Is Perfect for All Types of Computer Cases In order to link up the ARCTIC F8 PWM Black, your PC should have a 4pin PWM connector.