Begin by downloading the zip folder for Mac either from the WCH website or directly below.

After unzipping the folder, double click on the CH34xVCPDriver.pkg file.

This will launch the Installer dialog window. Click Continue.

Click Install to begin the installation.

A security notification may open after the installation begins. Use Touch ID or enter your password to allow the installation to continue.

You'll see a progress bar. Once the installation has completed you'll see a message in the dialog box that the installation was successful. Click Close to exit the box.

This driver application may open automatically following the successful install above.

If it does not, open LaunchPad, find CH34xVCPDriver Application, and open the App.

Click Install to install the driver.

A security warning may open. If so, click on Open Security Preferences.

In Security and Privacy, click on the lock icon in the lower-left corner to make changes.

Click Allow to allow the installation to continue.

Once the installation finishes, you'll see a dialog box open that says "success". Click OK.

Finally, quit the application. That's all there is to installing the WCH USB to serial driver for Mac OS X 11.0 and above!