High-quality optical/coaxial digital DDC from FX-AUDIO FX-D03J USB connection compatible - Brand: FX-AUDIO - Model Name: FX-D03J - Input Type: USB - Output Type: Optical/Coaxial Digital - Included Accessories: 2 USB cables Purchased at Hard Off a few months ago and stored unused. I will sell it to anyone who needs it. ※ Includes the original 20cm blue cable and a long silver cable. (The silver cable seems to have a little rust on the terminals, but it doesn't seem to affect its use.)