The warning can be ignored, at the green prompt type the following lines pressing enter after each line (Note that spaces at the beginning of each line are important, you can just copy paste line by line)
Code:
import wmi, pythoncom
pythoncom.CoInitialize()
_wmi = wmi.WMI()
for c in _wmi.USBControllerDevice(): print c.Dependent.DeviceID.upper()