ScenarioYou ' re trying to connect a podcasting microphone to your MacBook Air.

To verify that your Mac has successfully connected to the microphone, you should use the System Information app to check the USB devices connected to your Mac. The System Information app provides detailed information about your Mac hardware, software, and devices. You can access the System Information app by choosing Apple menu > About This Mac, then clicking System Report. In the System Information window, select Hardware > USB from the sidebar. You should see your microphone listed under the USB Device Tree, along with its product ID, vendor ID, speed, and other details. If you don’t see your microphone, try disconnecting and reconnecting it, or using a different USB port or cable.  References :  How to use System Information on your Mac - Apple Support ,  USB-C Digital AV Multiport Adapter - Apple