Share:
amazon.com
4K Quad Hdmi Multiviewer 4 in 1 Out Seamless Hdmi Switcher with Remote Control, Combine 4 tvs into 1, 9 Display Modes Switching Between 4k@30hz and 1080P@60Hz for Security Camera/Computer/TV Box, etc
$31.54
"Upgrade for my existing hdmi switch that I use. So I can use 1 4k screen as 4 1080p screens"