Simply attach the speaker bar below your display's bottom bezel through the slots designed for a perfect fit and connect to the display's integrated USB port. No tools or software driver required! Enjoy clear dual-speaker stereo sound for your media and more, and use the line-in port to connect your phone or player directly to the speaker bar. A headphone jack lets you listen without disturbing your colleagues. Buttons: On, Off, Volume Controls on Right side of right speaker