iBirdie Fiber Optic HDMI 2.1 Cable Feet 100 Metre 300 Feet, Directional Active
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.