https://security.utexas.edu/content/min-security-standards | Systems > Minimum Standards > 4.5. System Hardening > 4.5.2

• "Operating system and application services security patches are installed expediently (e.g., 30-days) and in a manner consistent with change management procedures. Products that no longer receive security updates from the vendor (e.g., unsupported) are not authorized."
  
• Apple does not provide security updates for anything older than the last three operating systems released. At this time, you must be running at least macOS Catalina 10.15.7 to be in compliance with the Information Security Office's minimum security standards.

Mac Hardware Requirements

macOS Sequoia is compatible with these computers:

https://support.apple.com/en-us/120282

Mac Hardware Requirements

macOS Sonoma is compatible with these computers:

https://support.apple.com/en-us/105113

Mac Hardware Requirements

macOS Monterey is compatible with these computers:

https://support.apple.com/en-us/HT213264

Backup your files

• Instructions for confirming or creating a backup through CrashPlan (the University's backup system) can be found here: Code42 CrashPlan UT Backup
• Information on UTBox and using this service to store or keep a copy of your files can be found here: UTBox Wiki Pages

How to update the software on your Mac

Use Software Update to find and install updates for macOS, built-in apps like Safari, and apps downloaded from the App Store.

How to upgrade to macOS Sequoia

Learn how to download and install macOS Sequoia, the latest version of the Mac operating system.

How to get old versions of macOS

If your Mac isn't compatible with the latest macOS, you might still be able to upgrade to an earlier macOS, such as macOS Monterey or Big Sur.