Apple's new USB-C Magic accessories, including the Magic Mouse, Magic Trackpad, and Magic Keyboard, currently only work properly with macOS Sequoia 15.1.
Users on older macOS versions such as Sonoma and Ventura may experience scrolling issues with the Magic Mouse and non-functioning Touch ID and function keys on the Magic Keyboard.
It is unclear if Apple will provide full support for the USB-C accessories on Sonoma and Ventura in the future.
There is a possibility that Apple is pushing users to upgrade to macOS Sequoia, potentially leaving those on older versions with limited functionality.