Hi Matt,
The thunderbolt 3 port is used in combination with the external enclosure(s) featuring quad-sdi input.
The enclosure requires the thunderbolt 3 port for proper communication and bandwidth.
If you have any additional questions about the solutions or independent products please don't hesitate to return to the forums.
Matt Mack
We are thinking about purchasing the Producer+ Kit, but we are unsure why the computer would need a Thunderbolt 3 port. Could anyone explain this?