Enjoy a wonderful user experience: Rotate the multimedia knob to adjust the volume. With a one-button mute function, when listening to music, just press the button and the music stops. Press again to resume playback. Robust and Durable: The USB volume control knob is crafted with a high-quality metal casing, featuring a sturdy rotating shaft and a detachable USB cable, ensuring this audio adjuster is built to last. No Drivers Needed: This volume control knob supports Windows XP/7/8/10/OS. Simply plug it into your computer, and it's ready to go. Plug and play, no driver required. You can directly adjust the volume by turning the knob. Delicate and Convenient: Easy to carry and use thanks to its small and delicate design. Combined with an aluminum alloy and black exterior, the entire USB volume control knob boasts a more atmospheric and stylish look. Material: Metal Color: Black Package Contents: 1 x USB Volume Control 1 x USB Cable 1 x English Manual (Only the above package content is included; other products are not.) Note: Light and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3 cm.