COM Ports Won't Install At COM3 in Windows 2000
When I install my Digi product in Windows 2000, the new COM ports should start at 3 (or perhaps 5) but instead they start at a much higher number and I cannot rename them.
There was a Digi product previously installed in the system, and although the physical board was removed the adapter was not removed from Device Manager.
A previously installed Digi product was not completely removed from the registry when the adapter was uninstalled.
The Digi adapter must be removed from Device Manager even though it no longer appears. Follow the instructions for removing phantom ports at the URL given below.
To remove extraneous COM ports from the registry, follow the instructions given for removing phantom ports on the URL given below.
Phantom port removal procedure