- Power Supply: Operates efficiently within a voltage range of 4 to 12 V with a maximum rating of 5W (do not overload). - Easy Setup: Simply insert the device into your phone's power source, plug the USB connector into a USB port, and adjust the control knob to set your preferred speed. - Adjustable Output: Provides a stable output voltage range of 2.5 V to 8 V, allowing you to customize the fan speed to suit your comfort. - Versatile Use: Perfect for hot days, this USB fan controller transforms any standard fan into a personalized cooling solution at your desk, in your dorm, or while traveling. Key Features: - Compatibility: Works seamlessly with most USB-powered fans, enhancing their functionality. - Compact Design: Lightweight and portable, making it easy to carry and use in various settings. - Durable Material: Built to last, ensuring reliable performance for extended use. Use Scenarios: 1. Stay cool while working at your desk by adjusting the fan speed to your liking. 2. Use it in your dorm room to create a comfortable study environment during warm weather. 3. Take it on trips to ensure you have a customizable cooling option wherever you go.