There is no port. First, it is an institutional issue. This system has been streamlined, which means that the system has deleted all redundant components. It's a pure version system! Second, you see if the type of demodulator you created is correct. I feel that your installation method is incorrect, and there is a big problem! Method: uninstall and reinstall, use the correct options, and then restart the computer! I haven't found it after restarting, sorry, change the system! Good luck!