Stepless USB Speed Controller for Fans and USB Devices Key benefits: - Smooth, precise fan speed control to match actual cooling needs and reduce unnecessary noise and power use. - Dual output ports for greater convenience and wide device compatibility. - Compact, lightweight design for easy transport and use at home, in the office, or while traveling. Main features: - Stepless speed control technology provides seamless adjustment from very low, quiet speeds to high, efficient cooling speeds to suit different scenarios. - Two USB outputs including Type-C and USB-A for compatibility with the latest laptops, tablets, and smartphones, increasing operating convenience. - Maximum output power up to 5W to support full-speed fan operation and deliver strong cooling for high-performance laptops and larger devices. - Compact ABS housing that is lightweight and space-saving, making the controller easy to carry and store. - Wide application range suitable for desk fans, laptop cooling, phone cooling, USB pumps, and other USB-powered equipment. Technical specifications: - Shell material: ABS. - Input: 5V 2A. - Maximum power: 5W. - Output: 5-9V 1A. - Rated power: 3W. - Input jack: USB and Type-C. - Connection method: USB plug-in or data cable plug-in. Data cable not included. Typical use scenarios: - Home office desk fan: Reduce noise during video calls or increase airflow for focused cooling during intense work sessions. - Laptop cooling for long computing sessions: Improve thermal management for high-performance laptops by adjusting fan speed to match CPU or GPU load. - Mobile device and small accessory power: Provide controlled power to phones, USB pumps, and small USB appliances when steady speed or reduced noise is needed. Package contents and notes: - Package includes one speed controller. - The controller can also be used with a USB multi-plug or multiport power adapter for chained connections. - Data cable is not included.