Features: This 4 wire fan speed controller supports DC5V/12V input and integrates pd60w fast charging protocols, delivering precise speed control for optimized cooling performances in PC builds. Featuring a compact plastic housing with backlit controls and multiple installation option, the controller ensures quiet operating while maintaining efficient thermal management for 4 pin cooling systems. Ideal for PC builders and enthusiasts seeking customizable airflows solution in gaming rigs, workstations, or home theater setups requiring quiet computing environments. Perfectly integrates into PC cases, server racks, or electronic projects where space saving design meets professional 4 wire fan speed regulation and voltages adaptability. Engineered with energy saving technology, this device reduces fan noise by up to 30% while extending component life through intelligent thermal balancing in high performances Specifications: Component: plastic Optional: 5521 / typec 12V / Type C 5V to 12V Technical parameters: 4-wire fan speed adjustment function Usage scenarios: It is widely used in computer hosts, office equipment and other occasions that require fan speed adjustment Package Includes: 1PC Fan speed regulator note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.