Upgraded HDMI 2.1 Standard: Truely support for Dynamic HDR, AMD FreeSync, NVIDIA G-SYNC, eARC, Dolby Vision, HD Dolby 7.1, Dolby Atmos, BT.2020, ALLM, VRR, HFR, QMS, QFT, DSC 1.2 a Compatible with HDCP 2.3 to watch content protected videos. 8K Resolution: Supports 8K@60Hz and 4K@120Hz, provides resolutions up to 7680x4320 60Hz, backward compatible with 6K@60Hz, 5K@60Hz, 4K@144Hz, 2K@240Hz, 1080P@60Hz, etc. Supports 3D effects, bringing you a cinematic immersive visual experience. Fit Narrow Space: Combos of up down angle 90 degree and 270 degree HDMI adapters can be conveniently selected for actual needs, which is super handy for connecting HDMI cables at narrow space, It perfectly protects your cables from bending damage or breakage and also reduces the stress on ports of valuable devices. Package Content: 4 Pack HDMI 2.1 Male to Female Adapter.(2 x Up Angle + 2 x Down Angle)