The Source plug connects to video devices such as Blu-ray players, Apple TV, etc The Display plug connects to display devices like TVs, projectors, monitors, etc Copper HDMI cables can't achieve 18Gbps of bandwidth beyond 50 feet. In contrast Fiber Optic HDMI cables can maintain 18Gbps of bandwidth from.1 foot to 300 feet Supports All 4K 60Hz Formats This includes 4K 60Hz 4:4:4, 4K 60Hz HDR10, 4K 60Hz 4:2:2, and it's compatible with 4K 60Hz Dobly Vision, etc. The Fiber Optic HDMI Cable is very thin, with a thickness of only 0.2 inches