Better performance Plug and use with 45cm pigtali cable--No extra power needed.24K Gold-plated connector resists corrosion,providing rigidity and better signal performance. Health and Environmental Protection Environmental Material ABS: HDMI 1.4 Standard Pigtail HDMI Cable and Cuprum -Plated-Gold Port - Energy Saving and Environmental Protection. Features Multifunctional on switching:intelligent or mechanical Supports HDTV 1.3b/1.4b Supports highest video resolution 1080P/4K*2K@3048 Supports 250MHz/2.5Gbps/340MHz/3.4Gbps peschannel(7.5Gbps/10.2Gbps all chnannel)bandwidth Supports 12bit per channel(36bit all channel)deep color HDCP pass-through Supports uncompressed audio such as LPCM Supports compressed audio such as DTS Digital,Dolby Digital(including DTS-HD and Dolby True HD) Intelligent function 1.Once the source device is turned on or plugged in(should stay power-on mode),the swicher will automatically select this source. 2.Once the source device is turned off or plugged out,the switcher will select the next power-on source depending on the sequence automatically. Note 1.When the source devices are on the stand-by mode,its power supply should be turned off,otherwise this switcher can not meet intelliget function 2.When plugged in or out,this switcher is completely intelligent.