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 analog 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 theater-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 analog playback and recording or 48 KHz for SPDIF. A more than suitable solution for home theater, gaming or multi-media presentations, the External USB Sound Card is easy to install with plug and play support in Windows XP and Windows Vista operating systems. Designed to deliver a long-lasting and dependable sound solution, the External USB Sound Card/Audio Adapter is backed by our 2-year warranty and free lifetime technical support. Note: The audio adapter’s SPDIF optical pass-through port supports two-channel audio, this port does not support 5.1 or 7.1 audio. The StarTech.com Advantage - Full 7.1 audio output support in a compact and portable external sound card - Connect to external speakers through 3.5mm mini-jacks or optical S/PDIF - Backed by a StarTech.com 2-year warranty and free lifetime technical support