The U237-001 Virtual 7.1-Channel USB External Sound Card plugs into your computer or laptop's USB port to provide easy-to-access audio-in and audio-out ports. A convenient, inexpensive replacement for a damaged sound card or audio connectors, the U237-001 lets you plug a microphone, speakers and/or headphones into its 3.5 mm audio jacks and enjoy rich, vibrant sound. By installing the Xear™ 3D Virtual 7.1-Channel Surround Sound software (included), you'll be able to customize the audio settings. In addition to the two audio ports, the U237-001 features volume controls, microphone and speaker muting buttons, and LEDs that indicate audio status, activity and microphone/speaker mute. It's plug-and-play, with the USB audio driver automatically installing upon connection to a USB port. Compatible with Windows® 2000™ and later, Mac OS X® and Linux. Xear 3D software compatible with Windows XP, 7 and 8™.