StarTech ICUSBAUDIO7D, Extended Sound Card USB Audio, Sound card, External, USB 2.0, Silver, 7.1 channel surround, 48 kHz (max), Indicators Volume control, mute button, Included 1 , StarTech 7.1 USB Audio Adapter External Sound Card ICUSBAUDIO7D, USB Cablem, Installation CD, Instruction Manual. The Startech ICUSBAUDIO7D Sound Card provides a cost-saving upgrade from built-in/on-board sound that turns desktop/laptop sound into a home theatre-ready audio solution.