The Supermicro Delta 12V 0.57A FFB0412UHN FAN-0147L4 4-Pin 17500RPM 40x40x28mm Fan is a reliable and efficient cooling solution for your computer. With a voltage of 12V and power connection of 4-Pin, this fan is designed to keep your CPU cool during intensive usage. Made by Delta, a trusted brand in the industry, this fan has a high speed of 17500RPM and measures 40x40x28mm. It is perfect for use in CPU fans and heat sinks, and is a great addition to any computer setup that requires effective cooling.