Legacy Optical Connection: 

The RDAC XF connects to the following devices via Optical Connection:

• Enigma
• Odyssey/Voyager Gen 1
• Odyssey/Voyager Gen 2 (can use Optical or CAN bus)
• Older XTremes (can use Optical or CAN bus - see this article)
  

New CAN Bus Connection: 

The RDAC XF connects to the following devices via CAN Bus Connection:

• All iEFIS models
• XTreme EFIS and EMS
• Odyssey/Voyager Gen 2 (can use Optical or CAN bus)
  

Schematics attached.