The current trend of making laptops thinner now means that many of the connectivity options you are used to seeing have been replaced by a single USB Type C socket.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 a USB 3.0 Type A female socket, a DVI socket and a USB Type C connector.
Please Note: The WPD port supports PD2.0, if your device or charger uses a different protocol the charging current will drop to 500mAH or less.