Normal copper-made cables are vulnerable to interference from other objects when the long-distance transmission, especially over 5 meters and beyond,which causes images distortion and signal attenuation. Difference from normal copper-made cables, The biggest advantage of Fiber Optic Cable is that the signal does not degrade over long distances, and there is no significant difference in image quality received through fiber Optic cables. 8K Fiber Optic Cables support 48Gbps Bandwidth, the cables are slim, easy to install in house wiring. Resolution Up to 8K@60Hz, also support 4K@120Hz, backward compatible other version. Support Vision, Dynamic HDR,eARC, VRR/QFT/QMS/ALLM/eARC/ 1.2a, G-sync/Free-sync,etc This cable is unidirectional,not bidirectional.Please notice the "Source" and "Display ". Source plug must connect the source equipment, like , , Blu-ray, etc. Display plug must connect the display devices, like 8K TV, projector, monitor, etc. Colour:Black Material:plastic+metal Size:2M Package Contents: 1 x Fiber Optic Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.