If you have an M1 2020 MacBook Air, your USB-C port also supports Thunderbolt / USB 4. The 13" MacBook Air models from 2018, 2019, and 2020 USB-C ports also support Thunderbolt 3. If you have a MacBook Air from 2017 or earlier, you don’t have a USB-C port. However, you can still connect your MacBook Air to a USB-C monitor using a Thunderbolt 2 to USB-C adapter.
You can find all types of USB-C adapters at stores, including USB-C to HDMI, USB-C to DisplayPort, USB-C to DVI, and USB-C to VGA. Apple’s USB-C Digital AV Multiport Adapter is one example that allows you to connect to an HDMI port, which you’ll find on HDTVs and most monitors. [3] X Research source
If you’re using an earlier MacBook Air model that doesn’t have a USB-C port, connect the Thunderbolt 2 to USB-C adapter to your Thunderbolt port, and then plug in a USB-C cable to that adapter.
If you’re using a USB-C to HDMI adapter (or other type of adapter), connect the USB-C end to the cable you’ve plugged into your MacBook Air, and then insert the other end of the adapter into your monitor’s video input port (e. g. , HDMI, DVI, etc. ). If you don’t see your Mac’s screen on the monitor, turn off the monitor, and then turn it back on. [4] X Research source
For example, if your second monitor is to the right of your MacBook Air’s screen, drag the larger square to the right of the smaller square. This makes it so you can drag windows in that direction to have them appear on the second display.