Jim W

The public chart, but it doesnt go back far enough: This will give you a list of the macs and OS versions that work together: https://eshop.macsales.com/guides/Mac_OS_X_Compatibility Tech support has an official chart with the results that they tested directly, they can give you specifics about the older versions. I'm fairly certain 12.5.3 was compatible with the last PowerPC CPus but I cannot recall. (Old habits die hard, lol)

Thank you all very much! I have accepted a position at another company (Don't worry, not with our competitors 😉 ) that can flex with my life for the next chapter, I truly do hope to return someday. In either case, this will be my new account so that new folk aren't confused when they read the conversations and wont end up in a dead end if they tried to message my old one directly. I plan to still lurk, file feedback and jump in for the juicy 3d modeling, 3d printing, CNC and rendering convos!