NEW open package About this item 8K Fiber HDMI 2.1 Cable -- HDMI cable 50ft supports High-speed 48Gbps, 8K@60Hz, 4K@120Hz, 2K@240Hz, Dynamic HDR, Dolby Vision, eARC, HDCP 2.2 2.3, 3D, 32 Audio Channels, 4:4:4 RGB, ALLM, QFT, QMS, VRR, DSC etc. Backward compatible with version 2.0 / 1.4 / 1.2 / 1.1. Slim Flexible Fiber HDMI Cable -- Compared with traditional copper core cables, they have a greater bandwidth, faster speed, less signal attenuation, greater resistance to electromagnetic interference, are slimmer and more flexible, have a stronger bending strength, and a longer service life, which is the development direction of future cables. Long Distance Lossless Transmission -- Fiber optic HDMI cable can achieve lossless transmission, the longest transmission distance of up to 300m. Copper HDMI cord can't reach 18Gbps for more than 50 feet, while fiber HDMI cables can reach and without signal loss. High Quality HDMI Cable -- The long HDMI cable feature gold-plated connectors to prevent oxidation and are protected by a zinc alloy housing. Withstands over 20,000+ bending cycles. Attention -- Fiber optic HDMI cable is one-directional transmission. The plugs at each end are marked "SOURCE" and "DISPLAY". The "SOURCE" plug connects signal source devices such as TV Box, PS5, PS4, PS3, Blu-ray Players, Xbox Series, Laptop etc. The "DISPLAY" plug connects display end devices such as TV, Displays, Projector, Monitor etc. Please make sure you plug in each end correctly, you will not get signal from the device. Superior Gaming Experience -- Compared to 4K HDMI cable, 8K HDMI cable add enhanced audio return channel (eARC) to deliver HD audio and the highest audio quality. It also support variable refresh rate (VRR), which solves the problem of freezing and tearing of the picture for smoother gaming. Compatible with HDMI Devices -- Set-top boxes, video games (ps3/ps4/ps5), Blu-ray DVD players, Xbox series, uhd tv, hd tv, digital audio, various inch monitors, computer, hdtv 4k Fire Netflix and other HDMI-enabled device.