USB Audio Adapter Ext SPDIF Sound Card This versatile External USB Sound Card/Audio Adapter offers a high quality solution for upgrading desktop or laptop sound. Providing a robust USB audio experience, the USB sound card connects to a host computer through a single USB 2.0 connection, to deliver impressive external audio capability that can instantly be swapped between systems, without having to open the computer case for installation. Supporting analogue and digital audio for 2 to 7.1 channel audio applications, the external USB 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. The external USB sound card features easy-to-use volume control and two external microphone inputs - a convenient solution for any audio application requiring high quality sound with multi-input capability with support for 44.1 KHz and 48 KHz sampling rates for analogue playback and recording or 48 KHz for SPDI