05-08-2019 12:15 AM
Welcome to the Lenovo forum discussion!
As we were checking here, the USB-C port on the Lenovo Flex 5-1570 support a data transfer only and not a display port. You can check the complete specs from the user's manual https://download.lenovo.com/consumer/mobiles_pub/flex_5-1470_5-1570_ug_en_201703.pdf?CID=ww:lenovoso... (see page 9). The only way to connect an external monitor on the laptop is through the HDIM port of it.