See the F712FA UART Driver below. These are the latest drivers for the I/O UART from Asus for the VivoBook 17 F712FA. This would be the Intel(R) Serial IO UART Host Controller for the Asus VivoBook. There are a number of ways to install this UART driver being the install as well as the INF installer which you can see below. Its a very small file and you can first try and install this driver over the existing driver.
ASUS VivoBook 17 F712FA UART Driver
All the drivers are in the file. You will note that there are a number of files in the zip and there are two ways to install this file. You can right-Click on the .inf file and then click install or you can also click on the install.cmd file as can be seen below. You can also simply click on the pnputil file as seen below. This should install the driver for the ViviBook on your computer. You can also install this via the device driver on your computer for Windows 10 as normally there would be a yellow bubble showing that the driver has not been installed correctly.
This F712FA UART Driver is the Intel Serial IO UART Driver 30.100.1727.1 for Windows 10 64-bit which was released in May 2019. There are a number of UART drivers and this is the one for the ASUS VivoBook which allows you yo connect the I/O UART device on the VivoBook.