Thank you for your reply.
Yes, it is almost always at 80°, goes to 82°-83° for some seconds, then back to 80°.
What is weird is that the SSD in the slot #1 operates at normal temperatures, even under load.
AIDA64 version is 6.70.6033
My AIDA64 (last update) shows temperatures for both the M.2#1 and the SAMSUNG SSD 980 Pro 1TB mounted in it.
While the temperature shown for the SSD is actually normal (in the range of 38-42°C) the M.2#1 is constantly at 80°.
Any explanation about that?
Thanks for any help.