Fiber Optic HDMI Cables - discreet 4K at Blazing-Fast Speeds! Send high-res video, audio, and data through walls and across distances up to 50m with Binary�s all-new B8 Series Active Fiber HDMI cables. With more install flexibility than traditional active models, these heavy-duty fiber cables transmit 18Gbps of full 4K UHD with HDR wherever it�s needed, and are compatible with the latest HDMI specifications, including HDMI 2.0b. They�re also conveniently CL2 rated to go inside the wall, making any media system more discreet. Learn more.