About this item 8K HDMI 2.1 Cable 48Gbps : Optical 8K HDMI cable, complies with the latest HDMI 2.1 standard, 48Gbps width, refresh rate 8K@60Hz, 4K@120Hz, 2K@144Hz. Supports 10K resolution, longer length lossless digital audio. Create high-definition and stable 3D stereoscopic image transmission, clear color tone, large-screen display, and enjoy a visual feast. Also backwards compatible with HDMI 2.0/1.4/1.3/1.2/1.1. Also backwards compatible with HDMI 2.0/1.4/1.3/1.2/1.1. Designed for Gaming : Our Fiber optic HDMI 2.1 cable work flawlessly with Xbox Series X/S, supports variable refresh rate (VRR) and HDMI 2.1 eARC. No lag, screen tearing, or motion blur, just an amazing vedio/audio quality. High Quality : 24K Gold-Plated Interface enhances Signal Transmission Capability. Fiber optic cable reduce electromagnetic interference. Stable and high-speed transmission with 3D high-definition audio-visual enjoyment. Support the Dyna HDR, HDCP 2.2&2.3. Direction & Compatibility : Fiber optic cable is One-way Transmission. It must be instal in the correct direction. HDMI-enab devices to your HD TV, monitors, displays, or projectors and compatible with streaming devices, compatible with Apple TV, NVIDIA SHIELD TV, CD/DVD/Blu-ray players, Fire TV, Roku Ultra, PS5/4, Xbox Series. The “Source” HDMI connector is for source devices(Blu-ray, STBox, etc.), and the “Display” HDMI connector is for display devices(TV, cinema projector, etc.) Service : huaham provides a two-year warranty service. Return and exchange service is provided when the product has quality problems. Provide quality products and services to every customer. If you have any questions, please contact customer service.