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
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
Adjust TV configurations: The majority of 4K 120 Hz televisions do not come with HDMI 2.1 features activated; Following the installation of the HDMI cable, it is necessary to manually enable all HDMI 2.1 features in the TV settings; Your 4K television is capable of supporting 4K 120 Hz.
Directional HDMI Cable: The directional HDMI meaning that the source end of HDMI is required to connect to sources, must plug this end to HDMI output from source like DVD, computer, PS5, Xbox..., and another end is display to your monitor, TV, projector
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
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