Suitable for computer enthusiasts and mechanical equipment maintenance personnel, this device caters to anyone in need of customizing their fan speeds This fan controller is designed with a manual switchs for easy to operate and comes equipped with a 3 pin connector cable, ensuring installation process full control over your cooling needs with our fan speed controller with switchs, featuring speed regulation technology for precisions management Multifuntional in application, suitable for various cooling scenarios including computer cases, servers rooms, and industrial machinery that require efficient heat dissipation Constructed from circuit board materials+ aluminum+plastic, our fan speed controller is builting to last, providing solution for optimizing your systems ' thermal