Works with 98SE/ME/2000/2003/XP and Vista 32-Bit and 64-bit as well as Linux and MAC OS X NO Drivers Needed USB Sound Adapter External USB Sound Card with Line-Input Speaker Output and Mic Input. Works on MAC and PC. Compliant with USB audio device class Specification 1.1 ... Provides full-duplex playback/recording audio stream, no need sound card in PC