Logitech Speakers S120 let you enjoy your music, movies and games with rich and full stereo sound. Just connect the speakers to your computer with a standard 3.5 mm plug and you’re ready to go. Volume and power controls are simple and convenient. Logitech® Speakers S120 let you enjoy your music, movies and games with rich and full stereo sound. Just connect the speakers to your computer with a standard 3.5 mm plug and you’re ready to go. Volume and power controls are simple and convenient.