USB2.0, bus single, external and use, easy. Support///MPEG1()/MPEG2 SVCD)//DVD_/DVD_/DVD_/format file. It uses advanced technology, supports MS, EAX1.0/, HRTF functions and support for Windows2000/XP. Multi-channel technology, strong virtual 5.1 channel dynamic sound effect, rophone input signal is directly converted into digital signal, improving voice quality, especially suitable for voice input and identification! USB1.1/speed transmission, digital key design, convenient for control.