Features: 1.USB Sound Card: Supports virtual 7.1 channel. Stereo speakers, stereo headphones and microphones are supported. 7.1 channel pure and perfect sound quality, professional karaoke, game competitive sound card, 3D stereo surround sound, stable performance, surround sound immersive 7.1 experience. Bundled with Xear 3D sound simulation software, it can convert your stereo speakers or headphones into virtual 7.I channels. 2.Easy To Use: This USB sound card is perfect for replacing a faulty sound card or voice frequency port. It easily adds dual 3.5mm plug headphones, speakers or microphones to your device. 3.Plug and Play: The system will automatically recognize the USB to 3.5mm port within seconds. No need to download drivers, USB bus powered, no external power supply required. 4.Dual Channel Voice Synchronization: USB external sound card can be connected to speakers or headphones and 3.5MM microphone at the same time, effectively solving the trouble of damage to the computer's built in voice frequency port. 5.Compatible With Multiple Systems: For Windows 98SE/ME/2000/XP/Server2003/Vista, for Linux, for OS 10 or higher, no drivers required. Xear 3D (virtual 7.1 channel sound simulation software) for Windows XP/Vista, the virtual 7.I channel USB sound card is a highly flexible voice frequency interface that can be used in desktop or laptop systems. specification:Item Type: Sound Card Product Material: ABS USB 2.0 Transfer Rate: 12Mbps Interface: USB Type A, Stereo out Jack, Mono Microphone in Jack Includes Xear 3D, A Virtual 7.1 Channel Sound Simulation Software for Windows XP/Vista Applies To: for Windows 98SE/ME/2000/XP/Server2003/Vista, for Linux, for OS 10 or Later, No Driver Required PackageList:1 x Sound Card