When you run the command and the nothing is appearing, it's because is not detecting the USB cable, normally when you run the command will appear every external device you have connected to the MAC for example a mouse or keyboard, let me add another commands for MAC, hope at this point you have downloaded the drivers for USB connection with MAC if not will be one of the reason is not detecting the connection with USB type C cable.
Check USB connections:
Click the Apple icon.
Click About This Mac.
Click More Info or System Report.