This is a list of ASUS UART drivers which you can see below and consider what type of UART driver you will need depending on what hardware you are using. Search this website for other UART drivers as well by looking at the top of the page. See also the Asus mtp driver as well as the Asus adb driver on here as well as the Bluesoleil generic Bluetooth driver and ASUS BT400 driver also ASUS WL-161 pen.
ASUS UART Drivers
ASUS VivoBook 14 X412UA IO UART Driver