LINK Brand EXT40-4KECO.2 40M 4K @ 30Hz 4:4:4 HDMI Extender. This 4K30 HDMI Extender can extend HDMI high-definition signal up to 70m/230ft for 1080p, or 40m/131 ft for 4K@30Hz over CAT6 cable, achieving zero-delay, long-distance transmission between the signal sources and display devices. This extender with HDMI loop output can be cascaded to the next extender, supporting resolution up to 4K@30Hz 4:4:4. It supports EDID copy function (you can choose local or remote EDID). 3D TV and PoC (Power over Cable) function are also supported. Audio formats are up to LPCM 7.1, Dolby True HD, DTS HD. This multi-functional product can be widely applied in multimedia conference hall, TV teaching and large-screen display.