USB PC audio interface, supports line, microphone, and optical input. - Brand: Creative - Model Name: Sound Blaster Digital Music - Connectivity: USB - Output Terminals: Microphone input, line input/output, optical input/output - Function: PC audio interface - Compatible Devices: CD players, monitors, speakers, etc. New, unused. It's been stored in a storage room. Since it's new and unused, I haven't tested its operation. The box is in poor condition, and it's bulky, so I will ship the item outside of the box. Please comment at the time of purchase if you need the box. I am unable to provide product support, so this is for someone who knows how to use it. Thank you for your understanding. Thank you for looking.