This is why.
I used to get annoyed by the blinking LED light on my case when I put my machine to sleep… LEDs are pretty darn bright in the dark…
That they are, I put electrical tape over the lights some things, thankfully though my PC case has an on/off button for the lights.
LED lights never bother me. when i’m tryingto sleep.
and that’s why I wired my LEDS into fan controllers