Ethernet Port 2 does not work

[nomadlife]

Hello folks,

Internet, file sharing and screen sharing all work on Ethernet Port 1.
None of these work on Ethernet Port 2.
Would anyone happen to know how to fix this problem?

Thank you for reading through this.

 

[alphaod]

Do you have an Ethernet cable plugged into the second port? What does Network Preferences say about port 2? Have you tried an SMC reset?

 

[nomadlife]

Thank you for your time alphaod.

Do you have an Ethernet cable plugged into the second port?

Yes, indeed I do.

What does Network Preferences say about port 2?

See the image below:

Have you tried an SMC reset?

I had not, but now I have. Did not make any difference. What works on Port 1, will not work on Port 2. I hope it's not a hardware thing... my one-year warranty ran out 1 month ago.