This USB Audio Adaptor converts a USB port to an audio port, allowing you to add headsets and microphones to your computer without the need to unplug other devices! Compliant with USB 2. 0 and USB audio device specification 1. 0, the USB audio Adaptor couldn't be any simpler to install. . . it's as easy as connecting the Adaptor to an available USB 2. 0 port, then connecting your audio devices to the provided 3. 5 mm audio ports as needed. Compatible with Windows 98SE and up, as well as Mac OS 9. x and later, the Adaptor integrates into any computer environment, providing superb sound quality and convenience that can't be matched.