Thank you all for helping and throwing some advice on here. I have tried every combination that involves 2 cameras, 2 BlackMagic Mini Recorders, 2 Thunderbolt Cables, 2 HDMI Cables and the 2...

Dear IAIB,

I just upgraded to a 2013 Macbook Pro/Retina i7 with 16 gb ram. I am trying to put 2 HDMI cameras into the 2 thunderbolt connections.

When I plug each camera into the MB using the...