When we install an USB to Serial com converter then it will be obtained automatically, for examples COM 5, Com 6, etc.
In Windows 2000, Me or 98 SE, to change the serial com port as we want, for example we want COM 2, we must convert hexa decimal values for the port manually.
Go to Device Manager,
• Windows 2000
Start -> Settings -> Control Panel -> System -> Hardware -> Device Manager
• Windows 98/ME
Start -> Settings -> Control Panel -> System -> Device Manager
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