Feature: 1. Multifunction: The USB sound card has microphone recording function and Karaoke function. The driver speaker directly supports sound in 3d spatial positions and virtual 7.1 channels, dynamically rotating sound field. Analog speaker position free adjustment function. 2. Mixing Desk Function: Adjust the output level. Converts analog signals (microphone and CD, music, TV, radio, etc.) to digital signals and saves them. 3. Plug and Play: The stereo sound card converter is no driver required, instant play, no external power adapter is required. Supports common speakers or earphones. 4. Dual Jack: The external USB sound adapter has dual headphone and microphone jack, can be used at the same time. Two LED lights show the working status of the headset and microphone. 5. Function Key: Microphone, speaker, volume, mute. Freely switch between speaker and headset modes. 6. Volume Control Button: For easy volume control. Double mute button: mute microphone button and mute voice output button. Specification: Item Type: USB Sound Card Material: ABS Support Operating System: For Windows 2000, for Windows 2003, for XP, for Vista, for Windows 7, for Linux, for WinCE (5.0 6.0), for Android (2.1, 2.2, 2.3, 4.0), for IOS. Modes: 23 Acoustic Domain Protection Modes, 16 Rhythmic Protection Modes. Interface: USB Connection: Speakers or Headphones, Enjoy a Virtual 7.1 Track. Compatible: USB 2.0 Pure Digital Sound Output, Virtual 7.1 Channel Processing Capability.. Package List: 1 x Sound Card