In the case of "COM-DRV for COM-4xx-USB" was installed
An older version of the serial communication driver is already installed.
Uninstall the installed serial communication driver, and then install it again.
In the case of "COM-DRV for COM-4xx-USB" was installed
The way to uninstall depends on the installed the serial communication driver version.
- For Windows Serial Communication Driver Ver.10.00 or later, Please refer to [Setup Driver Environment]-[Modify and Uninstall]-[Uninstall] topic.
- For Windows Serial Communication Driver Ver.9.20 or earlier, Please refer to "Uninstall for Old version (Board)" topic.
- Windows COM-DRV for COM-1xx(USB)H Ver.3.10 or earlier, Please refer to "Uninstall for Old version (USB)" topic.
Windows COM-DRV for COM-4xx-USB Ver.3.10 or earlier, Please refer to "Uninstall for Old version (USB)" topic.
- Windows Virtual COM Driver Ver.4.70 or earlier, Please refer to "Uninstalling Virtual COM Driver for Old version" topic.
- Serial Communication Media Converter Softwaer Jan.2025 or earlier, Please refer to "Uninstall Serial Communication Media Converter for Old version" topic.