Tried it today without the power switched on.
The LED lights up when my Atari is powered on so I assume it's getting its 5V from the Atari. It also switches to my second monitor no problem.
Powered on it changes my Atari Desktop colour!
Why is everything a rabbit hole.
Do I not need to plug this in then?
Why are devices coming with 5V USB when it's not needed?
Also, how is the power changing the colour?
