Enhance your small fan with the versatile DC USB Fan Governor Circuit Board. Featuring high-quality materials ensuring durability, this board offers multiple voltage options, anti-reverse connection design, and output protection. Its compact size makes it perfect for fan modifications and repairs. Equipped with charging and full-charge indicators, this module ensures efficient battery management. The 9V version boasts 3 output gears and independent charging management with a power management chip. The 12V version provides 3 output options, independent charging, and power protection features. The board includes running light reminders for battery levels, various gear logic, and easy-to-follow instructions for use. Upgrade your fan with reliable performance and enhanced control. Purchase now for a seamless fan governance experience!