EARC: 1 feet to 100 feet support Audio Return Channel ARC and EARC; And ensure that the source end of the fiber optic HDMI cable is connected to the AVR receiver and the display end is connected to the TV
Change TV settings: Most 4K 120 Hz TVs do not have all the features of HDMI 2.1 enabled; After installing the HDMI cable, you need to enable all HDMI 2.1 features in the TV settings by yourself; Your 4K TV will support 4K 120 Hz
Active HDMI Cable: The HDMI fiber optic cable is an active HDMI cable, and active HDMI cable meaning that require stable power to work, it needs enough power to work properly
Directional HDMI Cable: This cable requires the source end to connect to devices like DVD players, computers, PS5, Xbox consoles... and the other end to display devices such as monitors, TVs, projectors.
Change TV settings: Most 4K 60 Hz TVs do not have all the features of HDMI 2.0 enabled; After installing the HDMI cable, you need to enable all HDMI 2.0 features in the TV settings by yourself; Your 4K TV will support full 4K 60 Hz HDR
Use the HDMI USB Cable: It comes with in the HDMI box; Why need use this HDMI USB cable; Since some HDMI slots, such as on HUB or on switch or on splitter, cannot provide enough power for the fiber optic HDMI cable