M-Audio Midiman CO2 Coaxial/Optical converter 2000 Grey

This device converts a digital signal from optical 'light-pipe' to coaxial cable and vice-versa. Comes with original power-supply and an optical cable.

It is missing the original box and manual.

This is the original description of the product:
The Midiman M-Audio CO2 Coaxial/Optical Bi-Directional Converter is a compact but rugged S/PDIF tool that simultaneously converts S/PDIF signals from optical-to-coaxial or coaxial-to-optical. CO2's innovative two-in, two-out design allows it to operate as a full-duplex bi-directional converter or as a half-duplex converter with a "thru" port. This enables the CO2 to be used both as a converter and a repeater, doubling its functionality.
The bottom line is that the CO2 Coaxial/Optical Bi-Directional Converter allows you to bridge the gap between devices and machines that would otherwise be incompatible. The CO2 breathes new life into your recording system, allowing different elements to communicate, changing signals from coaxial-to-optical and back again. This allows you to converge two otherwise incompatible musical signals with one uncommonly versatile converter.

• Ultra-compact bi-directional converter
  
• Coverts optical S/PDFI to coaxial S/PDFI, and vice-versa
  
• Two digital inputs for versatility
  
• Three-way switch selects operating mode
  
• Transformer-isolated RCA jack prevents system ground loops