PC Fan ARCTIC F9 PWM PST, Black:This ARCTIC F9 PWM PST, Black typifies a very effective fan that is suitable to adjust the cooling in your computer. This computer fan will suit those who do not want to be disturbed by light from the inside of the PC in the night hours, because this model does not have any backlighting. Another advantage is the the lower cost of the fan. The 92 mm fan size makes it easy to connect with all standard PC cases. Also take into account the voltage required for operation, which for this model makes 12 V. Youll find one fan in this package. ARCTIC F9 PWM PST, Black PC Fan Key Features The airflow of 43 CFM is sufficient for decreasing the temperature in your PC Distinctive and original appearance This powerful computer fan has special bearings for a longer battery life Operating voltage: 12 V The ARCTIC Fan Is Ideal for Any Computer Case To connect the ARCTIC F9 PWM PST, Black, your PC should have a 4pin PWM connector.