Cubase SX2 maximum OSX version

Hello all, I have a client who has Cubase SX2 (2.2.0) running on her aged G4 tower linked up to here various equipment and she wants have some of upgrade on the machine without upgrading her version as she is quite happy with it. She is running OSX 10.2.8 on there at the moment so what is the MAXIMUM OSX she can run Cubase SX2 on so I can give her a few options.There is nothing I can find documented online so need some ‘proper’ hands on experience from forum members if possible. Thanks in advance

I believe Mac OS 10.2 Jaguar was the last supported Mac OS version for the older discontinued Cubase SX 2 program.