With 2 LED indicators, you can easily know which port is active from the LED light. 【4K High Resolution】Support 4k@60Hz and backward compatible with 2k/1080p. （HDMI Cable is not included. 【No External Power Needed】 This 4k HDMI Switch Box is easy to use, no external power is required, just simply press the button on the HDMI switch box to make shift of input or output source.