Feature: 1. USB 2.0 Port: Immediately create microphone input and output connections through any USB port, which is ideal for desktop, laptop and netbook PC. 2. Good Performance: Improve access, bypass faulty sound cards or ports, and upgrade the performance. 16 rhythm preset modes, 23 sound field preset modes. 3. 3D Sound and LED Indicator: Support 3D and virtual 7.1 surround sound, including preset sound effects with 10 band equalizer. LED indicates microphone mute, status, activity. 4. Easy Access Keys: Microphone mute, speaker mute, volume up, volume down. The appearance is exactly like a USB flash drive, black shell, USB interface device, plug and play. 5. Save Function: Convert analog signal (line signal of microphone and CD MP3 TV recorder, etc.) into digital signal and save function. Support multiple operating systems. Specification: Item Type: Sound Card Material: ABS Support Operating System: For 2000 2003 XP Vista, for 7, for Linux, for CE(5.0 6.0), for (2.1, 2.2, 2.3, 4.0), for OS X Interface: USB Connection: Speakers or headphones, enjoy a virtual 7.1 channel track Compatible: USB 2.0 pure digital sound output, virtual 7.1 channel processing capability Package List: 1 x Sound Card