Features: Experience full control over your cooling needs with our fan speed controller with switch, featuring speed regulation technology for precisions management. This fan controller is designed with a manual switch for easy to operate and comes equipped with a 3 pin connector cable, ensuring installation process. Suitable for computer enthusiasts and mechanical equipment maintenance personnel, this device caters to anyone in need of customizing their fan speeds. Multifuntional in application, it's perfect for various cooling scenarios including computer cases, servers rooms, and industrial machinery that require efficient heat dissipation. Constructed from circuit board materials, aluminum, and plastic, our fan speed controller is builting to last, providing solution for optimizing your systems' thermal performances. Specifications: Texture: Circuit Board+Aluminum+Plastic Applicable Model: For 4 Wire PWM Fan Cable Length: Approx. 3.94inch(10cm) Package Includes: 1x Fan Speed Regulator note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color from the item.