Universal Audio Apollo Twin X DUO CORE Gen1. This is not Gen2. I am selling it because it is not compatible with my environment. It was working normally until I removed it. *Transferred. *The adapter has a fragrance smell. As shown in the photos. Returns are not accepted to prevent swapping. - Model: Apollo Twin X DUO Gen1 - Connectors: Optical digital input, line output, monitor, microphone input 1 & 2 - Controls: Volume knob, preset button, monitor button - Power: USB-C connection - Appearance: Aluminum casing, with ventilation holes Thank you for viewing.