Product introduction 1LED indicator light show the working status 2 Support common speaker or headphones, with a microphone hole 3 Microphone recording function 4 Kara OK function 5 multiplexing technology to achieve 51-channel dynamic sound(Note: it only support 51 channel sound) 6 Dynamic rotating sound field 7 The dom to switch speaker and headphone modes 8 analog speaker position adjustment function ly 9 The mixer function 10 The output level adjustment 11 The analog signal (microphone and CD, music, television, radio signals, etc) are converted to digital signals and saving function 12 don't need Driver 13 Universal Plug and Play real 14 The drive speakers directly support three-dimensional positional sound and virtual 51-channel 15 Using the USB port, direct use 16Need for an external power adapter 17 The advanced digital technology Support system: Windows /2000/200Windows /2000/2003//XP/Vista/Win7/Win10/Linux/WinCE(50 60)/Android (21, 22, 23, 4 5, 6,7,8) Packing List: 3X USB Sound Card ( Blue Green Black )