BestDealUSA External 7.1-Channel USB 2.0 Audio Sound Card Adapter New generic SYBA USB Virtual 7.1-Channel Sound Adapter Quantity: 1 Add a virtual 7.1 channel sound to your PC. turn your stereo speaker / earphones into 7.1 channel environment. Specification USB2.0 Full-Speed (12Mbps) Specification USB HID Class Specification 1.1 USB Audio Device Class Specification 1.0. USB bus-power, no external power required! Connectors: USB Type A, Stereo output jack, mono microphone input jack Xear 3D virtual 7.1 channel sound simulation software for XP / Vista is included Functions keys: Microphone-Mute, Speaker-Mute, Volume-Up and Volume-Down LED indicators: Microphone-Mute Status, Activity Plug and Play. No drivers required for Windows 98SE / ME / 2000 / XP / Server 2003 / Vista, Linux, MacOS System Requirement Desktop or notebook PC with a USB port. Stereo active speaker or stereo earphone. Windows 98SE, ME, 2000, Server 2003, XP, Vista, Linux, MacOS, or higher. Xear3D (Virtual 7.1 channel sound simulation software) Suggested Applications: Windows 98SE, ME, 2000, Server 2003, XP, Vista, Linux, MacOS Manufacturer Part Number: SYBA SD-CM-UAUD71