USB-C multiport adapter adds 4K HDMI, USB-A, USB-C PD charging & Gigabit Ethernet ports to your tablet, laptop, notebook, smartphone or PC. With a source device that also supports USB DisplayPort Alt Mode, you can extend video from your primary display to another, duplicate the same video on both displays or change the second display to your primary. To send 7.1-channel surround sound & Ultra High Definition video to a 4K-ready HDMI television, projector or monitor, connect the HDMI port to the display using an HDMI cable (sold separately). The HDMI port supports UHD video resolutions up to 3840 x 2160 (4K x 2K) at 30 Hz. The USB-A port accepts USB peripherals, such as a flash drive, mouse, keyboard or printer. It supports fast USB 3.1 Gen 1 data-transfer rates up to 5 Gbps & is backward-compatible with USB 2.0 & USB 1.1 devices. This dedicated BC 1.2-compliant port provides up to 1.5A of fast-charging power to mobile devices.