Catalina Upgrade for a 2011 iMac
I purchased a 27" iMac new in 2011 so I am not able to download Catalina. I cannot locate any information regarding what, if any, hardware upgrades are needed so I may upgrade to Catalina (I currently have High Sierra Version 10.13.6). Is it possible to make hardware upgrades to my iMac for this reason? I would like to eventually upgrade to the latest Office suite, but the information is stating I need to first have Catalina installed. I love my iMac, but I do not want to spend thousands of dollars on a new one.
iMac 27″, macOS 10.13