PCMCIA Serial Card: Unable to establish a connection to serial device
"The product has been installed successfully and the new COM Port shows
up without warnings in the device manager. However, it is not possible
to establish a connection to any serial device connected to the
Change driver settings
Locate the COM Port in the device manager, then open the properties dialog. Make the changes as indicated by the red circles.
Restart your computer.
Should the above crystal frequency not resolve the problem, you should click on "detect crystal frequency
" (Windows 2000/XP).