Which Find My feature is available ONLY on MacBook models with Apple silicon?

 Notify When Left Behind is a Find My feature that is available only on MacBook models with Apple silicon. This feature alerts you when you leave your Mac behind in an unfamiliar location, such as a cafe or a hotel. You can also set exceptions for places where you don’t want to receive notifications, such as your home or office. Notify When Left Behind requires a Mac with Apple silicon and an iPhone or iPad with iOS 15 or iPadOS 15 or later. References: = Apple - Support - Manuals, Find My User Guide, Notify When Left Behind; Apple - Support - Manuals, Set up Touch ID on iPad; How to use the new Notify When Left Behind feature in iOS 15.