Dikuolink 8K ultra high speed HDMI 2.1 optical cable fully complies with HDMI 2.1 specification to ensure that 8K@60FPS / 4K@120FPS It perfectly supports the new features of HDMI2.1 such as Dynamic HDR10, eARC, HDCP 2.2&2.3, ALLM, QFT, QMS, VRR, etc. The cable meets the requirements of the latest international EMI standards, significantly reduces the interference of Wi Fi and other radios, and ensures the provision of 48Gbps high bandwidth related features, including enhanced video and audio performance. Supported Features: 48Gbps High Bandwidth Dynamic HDR 10 Enhanced Audio Return Channel (eARC) Auto Low Latency Mode (ALLM) Variable Refresh Rate (VRR) Quick Media Switching (QMS) Quick Frame Transport (QFT) DTS-HD Master Audio, DTS:X, Dolby TrueHD, Dolby Atmos HDCP 2.2 & 2.3 Ethernet ARC CEC For all HDMI 2.1, 2.0, 1.4 devices (not full list): Player: Sony Samsung LG Blu-ray player, Fire TV, Roku PS4 PS5 Xbox Series X, AMD Radeon Nvidia RTX 3080 / 3090 Geforece Shield ... TV or Projector: LG CX C9 B9, Sony X900H Z8H, Samsung Q80T Q90T, TCL Vizio B&O JVC ... Receiver: Yamaha Denon Onkyo Marantz ...