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TROUBLESHOOTING FOR KPG-22U, KPG-36U, KPG-43U AND KPG-46U
Question
Answer
2
6. Right-click "Silicon Labs CP210x USB to UART Bridge (COMx)" in the Device Manager > "Port
(COM and LPT)", and then select "Properties".
7. Click the "Port Settings" tab and then click the "Advanced Settings" button.
8. Select the desired COM port number from the "COM Port No." dropdown list.
A COM port number with (Busy), such as "COMx (Busy)" cannot be selected since the number is
being used by another device. If a COM port number with (Busy) is selected, the message "This
COM name is being used by another device (such as another COM port or modem)" appears.
If you wish to use a COM port number with (Busy), make the number available by disabling the
device using the COM port number in advance.
9. Click the "OK" button.
Note:
If installation information on a device that no longer physically exists (or a modem card that was installed
before but is now disconnected) is retained, the COM port assigned to the device may become "Busy".
For Windows Vista and Windows 7, the administrative privilege is required to do the above operations.
How do I uninstall the KPG-22U, KPG-36U, KPG-43U or KPG-46U driver?
Follow the procedure below to delete KPG-22U, KPG-36U, KPG-43U or KPG-46U setup file and
drivers.
1. Start up the PC, and then make sure that Windows XP, Windows Vista or Windows 7 is properly
running.
2. For Windows XP: Click "Start" > "Settings" and then select "Control Panel".
For Windows Vista and Windows 7: Click "Start" and then select "Control Panel".
3. For Windows XP: Select "Add or Remove Programs".
For Windows Vista and Windows 7: Select "Uninstall a program".
4. Delete the setup file.
For Windows XP: Select "Silicon Laboratories CP210x VCP Drivers for Windows XP/2003
Server/Vista/7" from the program list, and then click the "Change/ Delete Programs" button.
For Windows Vista and Windows 7: Select "Silicon Laboratories CP210x VCP Drivers for
Windows XP/2003 Server/Vista/7" from the program list, and then click the "Uninstall a program"
button.
5. Click the "Yes" button in the "Do you want to completely remove the selected application and all
of its features?" message.
6. Click the "OK" button in the driver deletion message.
7. Click the "Finish" button after "Uninstall Complete" appears.
8. Delete the drivers.
For Windows XP: Select "Silicon Laboratories CP210x USB to UART Bridge (Driver Removal)"
from the program list, and then click the "Change/ Delete Programs" button.
For Windows Vista and Windows 7: Select "Silicon Laboratories CP210x USB to UART Bridge
(Driver Removal)" from the program list, and then click the "Uninstall/Change" button.
9. Click the "Uninstall" button after the uninstaller is activated.
10. Click the "OK" button after the "Success" message appears.
Now the uninstallation completes.
© Kenwood Corporation
Document No. 028
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