1Long Distance Transmission: 2 HD multimedia interface short cables are connected into one HD multimedia interface cable for longer distance transmission. 2HD Display: 8K HD multimedia interface female connector supports 8K, 7680x4320 resolution, 4 times the clarity of 4K, 3 times the resolution of the human eye, and no graininess at close range. 33D Technology: Female HD multimedia interface coupler adopts 3D stereoscopic imaging technology, with natural color transition and vivid picture restoration. 4Aluminum Alloy: The HD multimedia interface female to female coupler Adapter is made of aluminum alloy with high strength; it is compatible with a wide range of HD multimedia interface outputs and displays. 5Scope of Application: HD multimedia interface coupler adapter is suitable for larger conference room laptops connected to HD projection screens, whiteboards, HDTVs, HD screens.