PC Fan ARCTIC F12 Silent Black:The ARCTIC F12 Silent Black typifies a very powerful fan that is suitable to enhance the air circulation in a PC case . This PC fan will satisfy those who do not want to be disturbed by light from the inside of the PC in the evening, since this fan has no backlight. Another advantage is also the the lower cost of the fan. The 120 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. ARCTIC F12 Silent Black Computer Fan Key Features The airflow of 37 CFM is sufficient for cooling down your computer Original design This powerful fan holds special bearings for prolonged usage Operating voltage: 12 V The ARCTIC PC Fan Is Suitable for Any Computer Case To connect the ARCTIC F12 Silent Black, youll need a 3pin connector.