4k second display settings
Hi everyone, I have an iMac pro late 2015 with Mojave, I just bought a samsung 4K 32" 60hz, but I cannot set it at 4K 3840x2160, it is set on 1960x1080 and I cannot find any settings on the iMac to change these settings. Can anyone help me please?
many thanks in advance
iMac Pro