The Companion 5 Multimedia Speaker System from Bose is a 2.1 channel speaker system with a powerful 5.25" Acoustimass subwoofer that connects to and is driven by your computer via USB 2.0. The satellite speakers come preassembled on their stands and are powered by 2" drivers to give your music and gaming a rich sound. A wired control pod is included to let you control the volume for your computer. These features make the speakers an excellent choice to handle audio output for your computer.