Deduction there because earlier out of nowhere the 3rd port is smoked. At least get through this one port by no signal, transfer it to another port "solves" the problem.
Can not explain why only one port should make the bend, me either entirely or not at all, especially since the pendent notebook has not been active for a few days and no similar voltage spikes due to bad weather gave.
Guarantee / warranty I still have it, let's see if I will use, currently I still have another port available.