Posted by a reviewer on Amazon

Some lowerpowered devices especially those which operate on batteries or from usbbased connectors like my camera do not provide enough electricity over their hdmi outputs to power the switch

Posted by a reviewer on Amazon

This also means the autoswitching feature doesnt quite work right

Posted by a reviewer on Amazon

A few of our devices are always hot so auto switching doesnt work well

Posted by a reviewer on Amazon

A huge huge plus is the fact that it doesnt require an external power source look ma no hands ehrrmm look ma no power adapter

Posted by a reviewer on Amazon

Seems to have an issue where if i use an hdmi cord which includes ethernet support the switching doesnt work most of the time

Posted by a reviewer on Amazon

I wanted to use it on a 3440x1440 34 monitor at 60 hz but that doesnt work either so once again its my fault for not reading

Posted by a reviewer on Amazon

Switch correct but need power from hdmi a least two inputs if for some reason leave only one input connected and try to use the switch dont work correct and have intermittent video

Posted by a reviewer on Amazon

Ports are clearly marked and the device is powered by the hdmi sources needing at least 2 sources