Feature:***** Use imported audio processing chip 8416-CZZ. ***** Convert coaxial or optical digital audio signal to analog L/R audio. ***** Support 44.1 32.48-96KHz sampling rate playback.***** 24bit S/PDIF left and right channel input code. All connection ports are gold-plated interface materials.***** Provide electronic noise reduction transmission. Easy to install and easy to operate. The USB power cord is more environmentally friendly, stable and convenient.***** In the optical fiber, take care to remove the plastic optical fiber connector first. The direction of the interface should be square upwards and round over downwards. Just align the optical interface and insert it. ***** Do not insert the wrong side, it is easy to damage the optical interface