Summary

Yes, if your Mac has a USB-C, USB4, or Thunderbolt port that supports video output, you can use a compatible DisplayPort Alt Mode video adapter to connect an external monitor. The number of external displays your Mac can drive natively depends on its exact model and configuration.

Applicable To

Mac computers with USB-C, USB4, or Thunderbolt ports used with a Plugable USB-C video adapter that relies on DisplayPort Alt Mode.

Before You Buy or Connect

Confirm that the Mac port supports external video and that the adapter supports your monitor connection, resolution, and refresh rate.

Check Apple's display support specifications for your exact Mac model. Display limits differ by model and processor; some models also have different limits when a laptop lid is closed.

If an adapter has two or more outputs, check how it creates those displays. A USB-C MST adapter generally cannot provide multiple independent extended displays on macOS; its outputs may mirror.

What to Expect

A single-output DisplayPort Alt Mode adapter uses the Mac's native video capability and normally does not require DisplayLink Manager. An adapter that uses DisplayLink or Silicon Motion USB graphics is a different type of product and requires its corresponding macOS software and permissions.

For your Mac's native display limit, see Apple's MacBook Air display support guide or the display support specifications for your particular Mac model.

Important Notes

A USB-C connector alone does not establish video capability on every computer, and the number of physical video ports does not by itself establish how many independent displays a Mac supports. Check the adapter and Mac together before assuming a multi-monitor configuration will extend.

Need Assistance?

Email support@plugable.com with your Mac model and chip, macOS version, Plugable adapter model, monitor model, and desired number of extended displays.