The Logitech Stereo USB Headset 250 connects to the PC through the USB port, and requires no setup — it´s plug and play. USB allows the headset to perform consistently on any system. The USB technology is able to produce high-quality digital audio independent of the computer´s sound card, which is an advantage over non-USB headsets if the computer´s sound card is not of a high quality. Total Price Stereo dynamics with digital clarity Advanced digital USB streming audio provides superior clarity with the simplicity of a single USB plug-and-play connection