Product name:7.1 USB External Stereo Sound Card Audio Adapter 23 kinds of protection modes in the acoustic field 16 kinds of rhythm protection modes. Usb interface plug and play replace the traditional sound c5a.1r6d rhythm default mode. Directly connect speakers or headphones to enjoy the virtual 7.1-channel audio track. Compatible with USB 2.0 pure digital sound output virtual 7.1 channel processing capability. Product features: LED display light shows working status. Support common speakers or headphones microphone hole. Microphone recording function. Karaoke function. Multi-channel technology realizes 7.1 channel dynamic sound. Dynamically rotate the sound field. Freely switch between speaker and headphone mode. Analog speaker position free adjustment function. The function of the mixer. Output level adjustment. Convert analog signals (microphone and CD music TV broadcast signals etc.) into digital signals and save function. Chip: CM108 Size: 42 * 23 * 12mm Single gross weight: 33.2g Support operating system: Windows /2000/2003/XP/Vista/Win7/Linux/WinCE(5.0 6.0) / Android (2.1 2.2 2.3 4.0) / Mac. Package content: 1 x 7.1 USB External Stereo Sound Card Audio Adapter