Convert digital audio signal through USB port; Interface: USB Rev.2.0 high speed(recommend), full speed and USB 1.1; Compatible w/ latest USB (2.0 / 1.0) audio devices; Supports sampling rate: 192K / 176.4K / 96K / 88.2K / 48K / 44.1KHz; Power: USB bus; Extra oscillator can achieve accurate clock and shake of low digital signal.