Tecsa 4K high speed HDMI flat cables are compatible with all HDMI 2.0 devices and compatible with all previous standards. Allows you to share the internet connection between multiple devices without the need for a separate Ethernet cable.Tecsa latest 4K HDMI 2.0 standard can significantly increase the bandwidth to 18Gbps and is also compatible with all previous HDMI standards HDMI 1.4, 1.3, 1.2 Plug.It supports a wide-angle video aspect ratio of 21:9. Provide the best UHD viewing experience.