This is the IO UART Driver for the ASUS VivoBook 14 X412UA. You will note that this is an Intel Kabylake UART controller much like other computers in the Asus stable such as the VivoBook 15 F512DA UART as well as the VivoBook 17 F712FA UART and the ASUS ZenBook S13 UX392FN UART Driver. You will also see that there are three different ways to install the UART driver as you can see below. There are a number of UART drivers on this website as well.
ASUS VivoBook 14 X412UA IO UART Driver
This is the latest driver from Asus which was released in May 2019. You can see the list of files below and you can install the driver by right-clicking on the inf file and then click on install. You can also click on the install file or simply install the driver in the device manager.See the files in the zip file below.
Note the install.cmd file as well as the .inf file which has been shown above.