The be quiet! Pure Wings 2 black 140mm computer fan is a high-quality case fan designed for optimal cooling performance. With a maximum airflow volume of 61.2 CFM and a maximum fan speed of 1000 RPM, it efficiently dissipates heat to keep your computer components running smoothly. The fan features a 4-pin power connector for easy installation and operates at a quiet level, making it suitable for any computer setup. Made of durable plastic material and with a sleek black design, this be quiet! fan is a reliable choice for improving the cooling system of your computer.