FAQ

Can I change the COM port number?

I understand that I can change the COM port number via the COM port property in Windows 2000. Is it also possible to change the number from the original one that was given at installation?

Yes.
However, do not allocate the same COM port number already used.
Any duplication in the COM port number is likely to cause serious trouble.
Likewise, if you have unplugged your device without uninstalling the driver and reinstalled it to another USB port, you can not allocate the original COM port number (the number allocated before unplugging) to that device.

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