[ Universal Compatibility ]: 8K HDMI Cables compatible with last version 2.1a, backward compatible with version 2.1/ 2.0/ 1.4/ 1.2/ 1.1. Support connecting PlayStation 5 (PS5), PS4, Xbox Series X, Apple TV 4K, Macbook Pro 14/16(Apple M1 Pro/Max), Mac mini, Mac Studio, NVIDIA SHIELD TV, Nvidia RTX 3080/3090, Fire TV, Roku Ultra, Blu-Ray Players and other HDMI-enabled devices to HDTVs, displays, projectors, A/V Receiver. [ Enhanced Gaming Experience ]: Compared to 4K HDMI Cable, 8K HDMI Cable adds an enhanced audio return channel (eARC), provides high-definition audio, and the highest audio quality. These HDMI 8K Cables support Variable Refresh Rate(VRR), Auto Low Latency Mode(ALLM), Quick Frame Transport (QFT), and Quick Media Switching (QMS), which ensure cinema-quality graphics, smooth play, real-time interactive virtual reality for a superior gaming experience. [ Ultra High Speed HDMI 2.1 Cable ]: Stouchi Fiber Optic HDMI 2.1a is the most recent update of the HDMI specification and supports a range of higher video resolutions and refresh rates including 8K60 4K120 2K144 for immersive viewing and smooth fast-action detail, and resolutions up to 10K. Dynamic HDR formats are also supported, and bandwidth capability is increased up to 48Gbps. [ 8K Fiber Optic HDMI cable ]: Equipped with the most advanced fiber optic technology, it is the future direction of wire by achieving greater bandwidth and faster speed, less signal attenuation, better interference immunity, longer service life, and higher carrying capacity than traditional copper cores, while being thinner and lighter. Rated CL3 complies with fire safety and insurance requirements, making it safe for use inside the walls of residential class buildings. [ Attention! ]: The cables are directional as they are optical HDMI cables. The plugs at each end are marked?SOURCE/DISPLAY?please note that the source is the signal source (Laptop, PC, PS4/PS5, Xbox and Blu-ray Player, etc) and the display is the display end (Monitor, TV, Projector, etc). So make sure you plug in each end correctly (if not then you will get no image from the device).