In Vahana VR, Decklink card inputs are identified the following way:
Model name - Display name (subdevice id) (card number if several cards) - Connector id (if several connectors)
Decklink display name adds a sub-device id and not on connector id. We added a connector id for you to know which physical port on the card your input corresponds too.
You can usually find the Model name and Display name through Decklink Desktop Utility:
For example for the Decklink Quad 2:
Subdevices and connectors are related the following way (in the Quad 2 case) :