6
It is possible that the COM port number assigned is too high. Sometimes a device won't work with the
USB-to-Serial adapter even though everything appears to have installed correctly because some
computers will only scan a limited number of COM ports.
For instance, it is possible that a computer has a limitation of scanning only the first four COM ports.
If the adapter is installed on COM5, a device with such a limitation will not work until the COM port is
reassigned to COM1 - COM4.
Windows 2000, ME, and 98SE port reassignment
1) Go to the Device Manager:
Windows 2000/2003: Start -> Settings -> Control Panel -> System -> Hardware -> Device
Manager
Windows XP: Start -> Control Panel -> System -> Hardware -> Device Manager
2) Expand
Ports (COM & LPT)
in the list of devices
3) Right click on the
Prolific USB to Serial Port
and click on Properties
4) Click on the
Port Settings
tab. Click on the Resources tab.
5)
Uncheck
the box that says
Use automatic settings
.
6) Select
Input/Output range
. Click on
Change Settings
.
7) Type "02E8-02EF" in the Value box. This value will change the port to COM 4. If COM 4
is in use, you must choose another port. The values for each port are:
COM 1: 03F8-03FF
COM 2: 02F8-02FF
COM 3: 03E8-03EF
COM 4: 02E8-02EF
8) After entering the value, click
OK
. Click
OK
again and click
Yes
when the "Creating a
Forced Configuration" window appears. Click
OK
again.
9) Restart your computer. If you go into the device manager, you will see that the COM port
has changed to the one you have selected.
4.
The Olympia P324 welcome screen appears. Click
Next
to continue or click
Cancel
to terminate the installation.
