This new versatile 2.1 Cable is backwards compatible and can be used with all existing 4k HDMI devices in your home and office 8K 60Hz HDMI Video Resolution support up to 8K (7680x4320) @ 60Hz including 4K Ultra HD 3840x2160 @ 60Hz and 4K @ 120Hz Dynamic HDR Supports a range of higher resolution and refresh rates. Improved bandwidth from 18 Gbps (HDMI 2.0) to 48 Gbps (HDMI 2.1) Pro 24K Gold Connections. Best quality for a flawless viewing experience. Tested for quality and 2.1 capability. HDMI Ultra High Speed with Ethernet