1.1x2 HDMI Splitter Duplicate/Mirror Only(Not Support Extend): HDMI Splitter can only duplicate same content from one HDMI input signal to two HDMI displays, transmit video and audio simultaneously, two displays can work at the same time. 2.Not Support: 1.Not Extended,it not extend different content to two monitors; 2.Not a switcher, it not support connect two HDMI input signal to one monitor; 3.Not a audio extractor, not support connect to any audio device such as speaker,sound-bar... 3.4K Ultra HD Resolution: Powered HDMI Splitter support 4K@30Hz, 3840x2160@30Hz,3D,Backward compatible with 1080p@50/60Hz/1080i@50/60Hz/720p@50/60Hz/720i@50/60Hz/576p@50Hz/576i@50Hz/480p@60Hz/ 480i@60Hz [For 4K resolution, the frequency can't above 30Hz] 4.Plug and Play: No need external driver,support HDMI v1.3/1.4, HDCP1.4 (Not Compatible With HDCP2.2). Support deep color 12 bit/16 bit. Support audio format: DTS-HD/Dobly-true HD/LPCM7.1/DTS/Dobly-AC3/DSD/HD(HBR)