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Then in Control Panel use right mouse click on the USB-serial port and select update driver and select option to "seek driver from your computer" and select "disk" and "browse file" to choose above INF-file to update the device driver software.
If Windows 10 refuses to install the INF-file because of it is not signed file, then do as described in this page to disable the driver signature enforcement and install the driver:
https://enwww.code-bude.net/2015/08/19/how-to-maketecheasier.com/install-unsigned-drivers-in-windows-10windows10/
Also this youtube video shows how to disable signature enforcement so that you will be able to install the driver:
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