DROK USB Volume Knob, Big PC Computer Speaker Volume Control Audio External USB Volume Control Knob with 1-Key Mute Function Support Win7 8 10 XP Mac Vista Android, Black

Compatible Systems This volume control knob supports Win10/8/7/Vista/XP/Mac, once you insert it to your computer, it can start to work. Please see the video to learn more. Open a blank txt file, then short press the knob and connect to the USB port. Enter the Windows/Mac mode to programme key combination for this controller. With OTG cable, it can also work for phone.
Simple Operation Rotating the usb volume knob to turn up and down volume, press the knob to make it mute, press down the knob and turning to adjust volume more quickly; keep pressing the knob for 8s, it will enter night mode, breathing light will stay on.
Strong Construction DROK USB volume control is made of metal shell and ALPS rotary shaft, equipped with breathing light and come with USB cable. With 1 key mute function, when you are listening to music, just press the knob, it will stop at once and back to music when you press again.
2 Sizes2 Sizes to fit different needs. The small DROK volume control knob is light and portable. Choose the bigger one if you prefer more substantial feeling with heavier weight.
Wide ApplicationsA great volume control tool for watching videos, playing games, even will be the best volume controller for activities, wedding, meeting, celebration and so on.