The OEM Logitech S-150 2.0 Speaker System provides digital-quality sound through a USB 2.0 connection for power. It features built-in controls for volume adjustment and a digital-power indicator. The system includes 2" dynamic drivers and comes with a single 4' USB cable to supply both power and audio. With a frequency response range of 90 Hz to 20 kHz, this speaker system is designed for reliable audio performance.