External USB Microphone: An external USB microphone is self-powered and connects straight to a USB port.Internal Microphone: Any MacBook or iMac comes with an internal microphone.However, it is critical to know which microphone your PC is utilizing to successfully diagnose microphone issues. Setting up an external microphone on a Mac is easier than doing so on a Windows 10 PC, where the correct audio driver may need to be loaded. Method 3: Troubleshoot Sound Input Settings.Pro Tip: Perform Microphone Test Playback Online.How to Fix Microphone Not Working on Mac.Connect the USB device to another computer.Connect the USB device to another USB port.You should see a device disappear from System Information when you remove the USB device, and it should appear again when you reconnect it. Wait a few minutes, and click File > Refresh Information. Open System Information and disconnect the USB device from your computer.If you install a new USB device and Mac OS does not detect it, you can complete the following tests to identify the issue: Click About This Mac > More Info > System Report.In the top-left of the screen, click the Apple icon.To open System Information, complete the following: You can find the name of the chipset by navigating to, searching for the product ID, and clicking the Technical Specifications tab. The USB device is displayed in System Information, under the name of the chipset. Examples of appropriate headings for a USB video adapter include 'USB without the driver installed' or 'Graphics and Displays'. To determine if Mac OS detects your USB device, you need to open System Information on your computer to see if your USB device is listed under the appropriate heading or is listed with an error (for example, 'Device has not been configured').

Mac not detecting usb headphones