Is it possible to use 2 DeckLink Duo card in a Mac for a 4 channel ingest setup or should one use a DeckLink Quad card instead?

The use of a DeckLink Quad (2) card is HIGHLY recommended and the ONLY approved setup for 4 channel ingest setup in combination with just:in multi. Our extensive tests combined with reports from customers have shown that the thermic dissipation issues when using two Duo cards in a Mac Pro or Sonnet Rack Kit were causing massive problems in terms of pipeline frame processing. These problems DO NOT occur with a Quad card. This is why we DO NOT recommend the usage of a DeckLink Duo card.

Please find the approved setups for just:in multi below:

• 1 x DeckLink Duo = NOT approved for 2 channel ingest.
• 2 x DeckLink Duo = NOT approved for 4 channel ingest.
• 1 x DeckLink Quad = approved for both 2 and 4 channel ingest.