PC Fan Noctua NF-A9x14 HS-PWM Black Swap:The Noctua NF-A9x14 HS-PWM Black Swap exemplifies a highly effective fan that is ready to adjust the air cooling of your computer. This computer fan will please those who do not want to be disturbed by coloured radiation from the PC in the night hours, since this fan has no backlight. Another plus is the the lower cost of the fan. The 92 mm fan size makes it easy to fit into all standard PC cases. Also take into account the voltage required for operation, which in this case is 12 V. There is 1 fan in this package. Noctua NF-A9x14 HS-PWM Black Swap PC Fan Key Features The airflow of 33,84 CFM is sufficient for cooling down your computer Original style This quality PC fan contains special bearings for prolonged usage Operating voltage: 12 V The NOCTUA PC Fan Is Perfect for Any Computer Case In order to safely operate the Noctua NF-A9x14 HS-PWM Black Swap, your PC must have a 4pin PWM connector.