- USB airflow control: Easily adjust airflow via USB with stepless speed regulation, allowing you to set the desired wind strength from gentle to strong. - Broad compatibility: Designed for standard 5V USB fans, this module can be conveniently connected to computer cooling fans, as well as compatible with phone chargers, USB power banks, and computers with USB ports. - Voltage adjustment made simple: This compact voltage regulation module allows you to increase voltage by turning clockwise and decrease voltage by turning counterclockwise, providing precise control over your USB devices. - Compact and portable: Its small size makes it easy to carry and store, ensuring it doesn’t take up unnecessary space in your bag or workspace. Use Scenarios: 1. Customize your workspace: Perfect for creating a comfortable work environment by adjusting the fan speed to suit your preferences while working on your computer. 2. Enhance your gaming setup: Use it to control the airflow of your USB fan, ensuring optimal cooling during intense gaming sessions. 3. Tailor your comfort at home: Connect it to a USB fan in your living space, allowing you to easily adjust airflow for relaxation or while sleeping. This product is an essential tool for anyone looking to optimize their cooling needs with convenience and efficiency.