Operaghost
Member
The Video out has nothing to do with laptop display. It depends on GPU and Ports. The port could be Thunderbolt, USB-C, HDMI.
Of course you are correct. The laptop display is the one that would be 4K while the external monitors resolution would be determined by what the video card supports. That said, as someone that uses two higher resolution external monitors, I can say it is frustrating that my laptop display itself does not support anything above 1080P. It makes trying to use all three displays difficult. I essentially gave up on using my laptop display along with the dual monitors.
OG