Daffodil USB External Stereo Sound Adapter for Windows and Mac. Plug and Play No drivers Needed Plug and Play - Quick and easy replacement sound card Audio Out and Microphone In - Perfect for skype headsets Stereo Connections - Enjoy stereo quality music and gaming Control Buttons - Mute the microphone and speakers and adjust volume directly Compatible With: Windows 7 / XP / Vista and MAC OS X - USB 1 / 2 / 3