Next in the table will be the port address or range from and to to open or keep open. Last depending on your router us the protocol UDP or TCP, with some routers you have to set up a Tcp with the same port range required and duplicate it for UDP as well as an entry in port forwarding.
I've had no problem with USB ports that are on top of my case, but unfortunately that only limits me to two ports without usb hubs.
In the worst cases, these programs work only with COM1-COM9 ports. Could the numbering scheme of the reserved COM ports be reset and the assigned ports be deleted? As a rule, you are not able to change the assigned COM port in the hardware properties, since the system says that all “lower” COM ports are already in use.
First of all, try to reassign the COM port number for a specific COM device manually.
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