WIDE APPLICATION: USB volume control knob is compatible with multiple systems, supports for Android and Windows systems, and is compatible with mobile phones, tablets, laptops, and desktop computers.FUNCTIONS AND USES: USB volume controller can directly control the volume of the computer operating system, can be customized, support shortcut keys.( Note: Custom functions require editing software, please contact customer service for editing software.)Wired version: USB volume controller is wired connection, Type-C interface, plug and play.EASY TO USE: There is no need to install any drivers or software on your computer to drive this volume regulator, and can be used after plugging in the device.Custom knob, the knob can be defined as any key on the keyboard, or as volume up and down, previous song, next song, play and pause, mouse wheel, etc.Item Type: USB Volume Control KnobFeatures: Custom; Support shortcut keysSupport: For Android systems, Windows systemsHow to Use:1. Rotate left: Volume down2. Rotate right: Volume up3. Press the knob: Pause/play4. Press the knob and rotate left: Previous song5. Press the knob and rotate right: Next songColor: BlackMaterial: ABS+acrylicPackage Contents:1 * USB Volume Controller1 * data Cable