Make room in your laptop bag.

The new MacBook Pro comes with two or four external ports, depending on the model you pick. And the new MacBook Air has a pair of ports. But those ports are only of one type: Thunderbolt 3, which is compatible with USB-C.

But you probably have devices that use USB-A, Thunderbolt 1, Thunderbolt 2, DisplayPort, HDMI, or something else. How do you connect these devices? With an adapter.
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Read full post here:
https://www.macworld.com/article/3136583/macbook-pro-thunderbolt-3-adapter-guide-how-to-connect-an-iphone-display-hard-drive-and-more.html