fresh install RHEL with 3 monitors but only 2 get connected

Hi,

I am relatively new to Red Hat Linux. I have freshly installed it and it automatically detects 2 monitors but I have 3 and the 3 should work. It worked on Windows 10.

I have a Dell XPS 8920 with Geforce 1080 GTX graphics card. The monitors are 3 4K monitors. Can anyone help??

I want to have 3 monitors connected to the one computer??

Many thanks
Michael