The Genuine Supermicro FAN-0065L4 40MM 13K RPM Cooling Fan Module is a high-quality cooling fan designed for computer systems. With a fan diameter of 40mm and a voltage of 12V, this fan is capable of efficiently dissipating heat to keep your computer running smoothly. The fan features a 4-pin power connection, black color, and is made of durable plastic material. Its 13K RPM speed ensures optimal performance for cooling your system effectively.