If the display cable features a connector that doesn’t match the Thunderbolt / USB four ports with your MacBook Air, You should use an adapter (marketed independently) to connect the display. It is exhibiting its age a little bit with its give attention to USB-A rather than spare USB-C ports. https://mac-hdmi-adapter34319.blog2learn.com/74446918/top-guidelines-of-hdmi-to-usb-c-apple