This Syba SD-CM-UAUD71 USB 2.0 external virtual 7.1 surround sound card adapter lets you connect headphones or speakers, and a microphone to your computer without the need to unplug other devices! Compliant with USB 2.0 and USB audio device specification 1.0. Compatible with all Windows Operating system and providing superb sound quality and convenience that can't be matched. Included with the USB Audio Adapter is the Xear 3D software for virtual 7.1 channel sound for use with Win XP ,Win Vista, Win 7, Win 8 and Win 8.1.- USB Virtual 7.1-Channel Sound Adapter (7.1-Channel Sound is for Windows Based System Only)- Connectors: USB Type-A, Stereo Output Jack, Mono Microphone-Input Jack- Functions Key: Microphone-Mute, Speaker-Mute, Volume-Up, Volume-Down- LED Indicators:Microphone-Mute Status, Activity- Driver-less - No Driver Required for Most Windows, Linux and MAC OS Systems- Compliant with USB 2.0 Full-Speed (12Mbps) Specification- Compliant with USB Audio Device Class Specification 1.0- Compliant with USB HID Class Specification 1.1