you are right!
I realized about the presence of an HDMI port on my graphic card only later on this morning!
Would you be able to give me some tips advices links on how to calibrate that monitor now! The color is far too yellow and I can't get it right! Is anywhere where I should be able to find default settings for a Dell 27 Ultrathin Monitor running a NVIDIA GeForce GTX 1080!
Many thanks again