Post originale di: Leonardo ,
Hi guys, thank you for your reply. I know that it is a diferent model. I've got no video on thunderbolt port. Cable is working and the monitor too, tested in other Macs. I tried everything, installed All macOS versions from El Capitain to Big Sur to see if it works. What I found different is that when I connect the cable, the system freezes 4 times for about 3 seconds, like it is trying to connect, and then nothing happens.