Features: PWM Fan Speed Controller with Type C Power precise 4 wire fan speed adjustment and universal compatibility, ideal for DIY liquid cooling systems and powerful pump installations. Engineered with durability plastic housing, this controller supports PWM signal input for dynamic speed controller, ensuring optimaled heat management across multiple devices. For PC builders, servers technicians, and hardware enthusiasts customizable cooling solution for high performances setups. Enhances airflows in gaming rigs, overclockeds workstations, or servers racks during extended operation or heavy computational loads. Integrates effortlessly into customizable cooling while delivering stable PWM output to fan/pump speeds with system temperature demands. Specifications: Item: PWM 4 Wire Fan Material: Plastic Size:about 4.5x1.85x2.2cm/1.77x0.73x0.87in Support 12V 4Pin Charging：Type C Cable：USB A to C 30cm/11.8in Package Includes: 1PC PWM 4 Wire Fan note: Please allow 0-1cm error due to manual measurement. make sure not mind before bid. Due to the differenceS between different monitors, the picture may not reflect the actual of the item. Thank you!