The UGREEN 8K HDMI extension cable has support for HDCP 2.2 and 2.3, Dynamic HDR, resolutions up to 7680 x 4320, refresh rates up to 8K@60Hz, 4K@120Hz, and 144Hz, and transmission speeds up to 48Gbps ultra high speed. compatible with HDMI 2.0 and 1.4 backwards. Advanced Transmission Speed: Having been upgraded to HDMI 2.1, this 8K HDMI extension cable has an Ultra High transmission speed of 48Gbps, which is nearly 2.6 times faster than HDMI 2.0. 2X Bold: By successfully preventing EMI interference, triple shieldings guarantee more reliable signal transmission. Compared to other standard 4K HDMI extender cables, this male to female cable has a stronger cable body, which reduces signal loss and improves transmission stability. Superior Material: Premium nylon that is flexible and braided, with over 10,000 bend tests.