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Do all ports on the Macbook Pro 16 support 5K?
- Thread starter Borzab
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If its an identical cable then you may need to try a different make of thunderbolt cable.
Could be Dust in the port?
Or dust inside the machine affecting that port? Or both.
Not sure how long you have had it and the environment its been In but my 16" machine had an odd glitch with one port, tried other ports with the same cable, glitches. Then tried another cable, glitches, then tried other ports, no gitching. Then tried the first port again, no glitches, then looked at the new cable and there was a tiny piece of fluff sticking out of the cable. Then I saw small amounts of dust in the port, so I cleared it out with a rocket blower and very fine faber castelle brush, then I saw the dust/fluff had transferred to the other cable. I thought all my ports had gone bad but the fluff seemed more likely the issue, so I opened up the back of the machine and it was full of fluff and dust and so were the ports.
Cleaned it all and now is running better and cooler.
Sadly all this stuff is a long process of elimination.
Try the simple stuff first, work methodically up to the point you know what it is.
Do you always plug the power in to the same port? Have you tried moving the power supply?
Could be Dust in the port?
Or dust inside the machine affecting that port? Or both.
Not sure how long you have had it and the environment its been In but my 16" machine had an odd glitch with one port, tried other ports with the same cable, glitches. Then tried another cable, glitches, then tried other ports, no gitching. Then tried the first port again, no glitches, then looked at the new cable and there was a tiny piece of fluff sticking out of the cable. Then I saw small amounts of dust in the port, so I cleared it out with a rocket blower and very fine faber castelle brush, then I saw the dust/fluff had transferred to the other cable. I thought all my ports had gone bad but the fluff seemed more likely the issue, so I opened up the back of the machine and it was full of fluff and dust and so were the ports.
Cleaned it all and now is running better and cooler.
Sadly all this stuff is a long process of elimination.
Try the simple stuff first, work methodically up to the point you know what it is.
Do you always plug the power in to the same port? Have you tried moving the power supply?
Last edited:
hmm... You have 4 TB3 ports.
It only supports two 5K externals -- actually supports 2 6K externals, or will support 4 x 4K displays at once.
If you have more than one 5 or 6K display, you can't do more than 2 anyway.
So, you only need two ports for that level of display.
What is your concern at this point?
It only supports two 5K externals -- actually supports 2 6K externals, or will support 4 x 4K displays at once.
If you have more than one 5 or 6K display, you can't do more than 2 anyway.
So, you only need two ports for that level of display.
What is your concern at this point?
All the Thunderbolt 3 ports of the MacBook Pro 16 (inch, 2019) support an LG UltraFine 5K display at 5K. You can only have one LG UltraFine 5K display per side (so two LG UltraFine 5K displays max). You must have a Thunderbolt 3 cable that connects the display at "40 Gbps x1". Check System Information.app to make sure it's connected properly.