Have 27 inch Dell 4K monitor. Worked perfect with my iMac from 2016. Will not connect to my new iMac purchased 2020. Have used a couple of different cables including HDMI. Not connecting???
Anyone know how to get my new iMac to see Dell 27 4K monitor? The monitor worked fine with my old iMac purchased 2016. Does not connect with my new iMac purchased 2020. Have tried HDMI and Lightning/Thunderbolt connectors. No joy from either. Any ideas?
iMac 27″, macOS 10.15
