The advertising language of COM is very big, how to modify it?

Many customers reacted: When using JMDM series RS232 serial port controller, the biggest RS232 serial port number in JMDM upper computer software is "serial port 9", while the COM port number in the computer is already 20! I don't know what to do.

Solution: Just modify the port value of the computer's RS232 serial port. The specific steps are as follows:

1, my COMputer-right-click-properties-hardware-device manager-there is a "port (com and LPT)" under the battery. See the following remarks about USB serial port (COM): This type uses USB to RS232 serial port-right-click properties-port settings-advanced -com port number.

2. Open my computer again-right click-properties-hardware-device manager-there is a "port (COM and LPT)" under the battery, and see that the port number shown below has been changed to a new one.