Static Pressure FansThis is a high-performance and high static pressure 92mm x 38mm fan that is designed for use in server cases, GPU cooling, CPU heatsinks, GPU, Radiators, or restricted spaces. or as a replacement fan for various products Powerful FansHigh air pressure blade design to get more concentrated farther air flow; This fan is designed to Maximize Airflow and can be too loud at Full Speed for some applications (this fan is not designed for silent operation but for performance) 4-pin PWM ConnectorPWM allows your motherboard to control the speed and airflow of the fan based on the component's temperature; It will help to keep your equipment cool and long-lasting Brushless MotorThe fan comes with Dual-ball bearings which rated at up to 50,000hrs; The fan moves a lot of air and includes a fan guard for protecting the fan from other objects 92mm PWM Fan Specs92 x 92 x 38 mm ( 3.62 x 3.62 x 1.5 in. ) Rated Voltage: