Using your Behringer HLC660U headphones is a breeze. First, plug the USB cable into your desktop computer, laptop, or any other USB - enabled audio device. The 'plug and play' feature means it will be recognized right away. Adjust the headband to fit your head comfortably and put on the over - ear headphones. The ultra - soft ear cups should make it easy to wear for long periods. If you're using the microphone, adjust the flexible boom mic to the right position for clear voice capture. You can control the volume and mute the mic using the inline selector. When you're done using the headphones, gently unplug the cable. To keep them in good condition, store them in a cool, dry place. Avoid pulling the cable too hard and clean the ear cups and microphone with a soft, dry cloth regularly.