USB Volume Control Knob This USB Volume Control Knob,Plug and play, no driver required, you can directly connect to the computer operating system through the cable to adjust the volume. All in one function The multimedia controller can adjust 3 options control the volume dial,it can pause/play, back, forward and mute controls ,give you quick access to the media controls. Detachable USB Cable Convenient to replace cables to fit different distances. Convenient to replace cables to fit different devices. Blue Breathing Light/b> Indicates the current working status. Easy to locate the item at night. Freely settable mode of always on/off. Aluminum Outer Covering/b> Smooth enough to rotate with only one finger. More comfortable touch than plastic covering. Scratch Resistance. Skid-proof Foot,Heavy Base/b> Adopts 3M skid-proof foot, won’t slip when placed on the table. With heavy metal block, make it more substantial. Wide range of applications It can also adjust the volume via OTG, connect phones, car navigation, set-top boxes and other Android devices. Support operation systems: Windows (XP/Win7/Win8/Win10, etc); Mac; Linux; Vista; Android. Specification: Color: Black Dimensions: 1.57*2.48*1.97in Net Weight: 5.11oz Accessories Description 1 x USB Volume Control 1 x USB cable 1 x instruction manual See more✓Multi Occasion Use: No extra power required, USB plug and play,The best volume control for listening music,watching videos, playing games, meeting, major supermarkets, computer training, wedding, celebration, party,activities and so on, free to adjust, easy to operate and convenient. ✓Delicate convenient/Cable long enough:USB volume control consists of metal case and rotating shaft. It is equipped with breathing light and 6.57 ft USB cable, so you no need to worry about the distance between the computer host and the computer using the desktop,and it's so small and delicate that you can take it with you wherever you go. ✓Previous/Next Switch: Press the knob and not loose,at the same time rotate the knob to switch the previous or next music. ✓One Key Mute:Connect the Multimedia Controller well first,during the sound outputing process, just need press the knob downward, the sound will be Mute at once the music will start playing if pressing the knob again. ✓Plug and play: This USB volume controller supports Win10/8/7/Vista/ XP/Mac/Android/IOS, it can work just after connect well with the computer, Plug and play, no driver required, you can directly adjust the volume by rotating the knob.