Denso GT10Q-SU User Manual page 15

When configuring the COM port:
In Windows 2000/XP, if you connect the scanner to your computer first time or have changed the COM port for
the scanner or hub, then confirm the COM port number on the Windows device manager or the like before use.
Windows 98SE/Me will automatically assign the COM port number according to the OS specifications so that the
port number cannot be fixed. This may cause the COM port number to be changed at the time of next rebooting of
the host computer if (1) you have connected the scanner to the COM port first time or (2) you have changed the
configuration as given below:
- Changing the number of the scanner units connected to the COM ports
- Changing the COM port to which the scanner or hub is connected.
In such a case, reboot the host computer, open the device manager, and check the COM port number actually
assigned by OS before use.
To use two or more communications processors (software) or scanners concurrently on your computer, be sure to
assign a unique COM port to each of them.
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