7.1 Channel, USB 2.0 Full-Speed (12Mbps) Compliant with USB Audio/ USB HID Device Class Specification 1.0/1.1 USB Bus powered, no external power needed Connectors: USB Type-A, Stereo output jack,Microphone-input jack Functional keys: Microphone-Mute Status, Volume up/Volume down control Include Xear 3D, the virtual 7.1 channel sound simulation software for Windows XP/Vista Driver not required for Windows 98SE/ME/2000/XP/Server 2003/Vista, Windows 7,Linux, Mas OS The USB Vitrual 7.1CH Sound Card is highly flexible audio interface which can be used either with Desktop or Notebook systems. Bundled with Xear 3D Sound simulation software, it turns your stereo speaker or earphones into 7.1 channel environment. No drivers required, just plug and play or instant audio playback, also compatible with all major operation systems. Brand No Brand SKU OT776EL171CB8NAFAMZ-262068