This 7.1 USB sound cards offers a high quality solution for upgrading desktop or laptop sound. Home Theater-Ready Audio Solution Providing a robust USB audio experience, the external sound card for your laptop or PC 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. Cost-Saving Solution Supporting analog and digital audio for 2 to 7.1 channel audio applications, the SPDIF output 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 audio to USB adapter features easy-to-use volume control and two external microphone inputs, for applications 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. Easy Setup 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. The USB stereo 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. | 7.1 Sound card: This 1.7 USB Sound card turns your laptop or desktop PC into a 7.1-channel home theater-ready sound system through a single USB 2.0 connection. | Cost-saving upgrade: With support for analog and digital audio output for stereo to 7.1 channel audio applications, the audio to USB adapter upgrade the existing integrated audio on a laptop or portable computer. | Built-in features: The external sound card features easy-to-use volume control and two external microphone inputs. It also supports 44.1KHz and 48KHz sampling rates for analog playback and recording or 48KHz for SPDIF. | Easy installation: The digital audio adapter is easy to install with plug and play support in Windows XP and Windows Vista operating systems. | Reliable support: Backed by a 2-year StarTech.com warranty, this 7.1 USB sound card also comes with free lifetime technical support.