(The 8K 5x1 / 4x1 / 3x1 HDMI Switch supports connect 5 / 4 / 3 HDMI sources to 1 HDMI display. UHD HDMI 2.1 8K Switcher 1x 8K HDMI 2.1 Switch ( 5x1 or 4x1 or 3x1 as you bought ). 3) Qualified 8K HDMI 2.1 cables,8K devices all are needed if you want to get 8K display.
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