The current trend of making laptops thinner now means that many of the connectivity options you are used to seeing have been replaced by a single USB Type C socket.
Simply attach this unit to the USB Type C connector on the laptop and you will gain an HDMI socket
You will then just need to connect to a display screen using the appropriate cable. Please Note: your Type C socket must support ALT mode to send a video signal and be compatible with this adapter
20cm Cable Black Type C USB 3.1 Plug HDMI Socket (supports displays up to 4K @ 30Hz)