Connect iMac to Dell Monitor - does not recognize
Purchased an iMac in 2021 and trying to connect an additional monitor, it is a Dell. HDMI from Dell monitor to HDMI/C adapter into the back of the new iMac. The iMac is not finding it. I am accessing the Display preferences through System Preferences and clicking on "Add Display". Have restarted Mac; made sure my connections are solid, but no connection. What am I doing wrong?
iMac 24″, macOS 12.4