How to correctly identify your phone model and version? I have a Samsung Galaxy Nexus and I'm trying to do a fresh reinstall of Cyanongenmod.

I see in their website that there are three different versions of this phone: https://wiki.cyanogenmod.org/w/Devices#vendor=%22Google%22;searchable=%22galaxy%22;

Now I am confused and don't know which version I have? I bought it in Portugal. But is there a way to automatically identify the phone?

Thank you
Go into settings then About Phone and it should display everything you need