Yes, it is compatible with the iPad Pro over USB-C. There is a slight power loss through pass-through charging, so you may need a higher-wattage power adapter to keep the iPad charged. The Ethernet option appears in the Settings app when an Ethernet cable is connected. When you connect an external display over HDMI, the iPad mirrors its screen at the iPad's aspect ratio. Only some apps, such as Netflix, VLC, and PowerPoint, support full-screen output to the external display.