Topic: Controller not found on Mac

I have an Xbox controller connected to my Mac (using a USB cable).  I have the appropriate driver installed.  The driver includes a System Preferences tool to test/verify the device is working, and I get feedback in that app when I use the controller.  Also, in the "About this Mac" / "System Report"; under Hardware / USB, I see (under the USB 3.0 Bus category) the Microsoft controller with the Product Id and Vendor Id listed.

But, when I run the HidSharp.Test code, it only lists the Apple Keyboard & Mouse stuff - not the game controller as expected. 

When I log "DeviceList.Local.ToString()" I see:  Mac OS HID

Any advise or controller suggestions (even if it means buying a different one) would be greatly appreciated.

Thanks in advance!