AdzMozi 3D Sound 5.1 USB Audio Controller External Sound Card (Integrated 2 Channel) for Computer/PC/Laptop (Blue). Features overview: This is leading digital technology in the electronic industry. Benefit: the best entertainment for DVD title, music, game & online content software value-added for dvd. Line out for speakers / headphones - line in for microphone. No existing sound card required;this sound card works completely independently. It will give a complete sound card and microphone input to any PC with a spare USB port. No additional power required, and no drivers to install. An ideal solution for faulty sound cards in PCs, laptops or netbooks. Hot plug-and-play. Two socket, one for microphone and one for earphone or headphone. Compact and easy to carry.