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. 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. Previous/Next Switch: Press the knob and not loose,at the same time rotate the knob to switch the previous or next music. 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.