Add extra functionality to your laptop with the JCA351 Usb-c to 4K Hdmi Ethernet Adapter. This adapter allows you to add an additional 4K Hdmi monitor, connect to a Gigabit Ethernet network, and includes a Usb-c Power Delivery port that can be used to charge your laptop when a Usb-c power adapter is connected.Display Alt Mode for Hdmi supports a resolution up to 4K with Primary, Extended, and Mirrored display modes.