2018 or newer Macbook Air supports onlyAnyone know how to use iPad as second screen for macbook air 2015 for free?
Sidecar system requirements
Sidecar requires a compatible Mac using macOS Catalina or later and a compatible iPad using iPadOS 13 or later.
- MacBook Pro introduced in 2016 or later
- MacBook introduced in 2016 or later
- MacBook Air introduced in 2018 or later
- iMac introduced in 2017 or later, or iMac (Retina 5K, 27-inch, Late 2015)
- iMac Pro
- Mac mini introduced in 2018 or later
- Mac Pro introduced in 2019