HELP - Trouble trying to use old iMac(21.5" Late 2012) as second monitor with new 27" 2020 iMac
Hi all,
I have been trying to use my old iMac (21.5 inch Late 2012 - ElCapitan 10.11.6) as a second monitor for my new iMac (Retina 5k, 27", 2020 - Catalina 10.15.7). I purchased USB-C to Thunderbolt 2 Converter and have the 2 monitors joined with adapter and thunderbolt cable. Instructions I read call for me to hit, Command F2 to create link. When I hit Command F@ nothing happens? I have spent hours trying to find way but have been unsuccessful. Any help is appreciated, thanks in advance
iMac 27″, macOS 10.15