1.Premium Aluminum Build: Achieve precise audio management with our sleek USB volume control knob encased in superior aluminum alloy. Its matte finish resists fingerprints, while -click rotary button provides a tactile and alternative to traditional ABS controllers.2.Convenient USB Plug and Play: Navigate your sound seamlessly with our PC computer speaker audio volume controller. Its 360-degree arc button is designed for comfort, enabling effortless audio adjustments without the discomfort of edges.3.Stable Anti-Slip Base: Maintain control and stability with our audio controller's non-slip base. The soft-pad ensures your device stays in place, offering peace of mind and consistent operation.4.Lossless Sound Quality: Directly manipulate your soundscape with our multimedia controller. It guarantees the sound, free from degradation, for an unblemished auditory journey.5.Generous USB Cable & Wide Compatibility: Our external audio adjust knob comes with a lengthy 1.87-meter USB cable, ensuring convenience across setups, and offers expansive compatibility with most modern operating systems, delivering versatility for a multitude of devices.Installation method: USB driver-freeMode: button to switch dual modeApplicable to: for , for OSNote:If your device can use a USB mouse and keyboard, you can also use our USB volume controls.Colour:BlackMaterial:ABS+aluminum alloyPackage Contents:1 x USB rotary buttonOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.