I will say, despite some of the reviews, and as an IT guy - set it up on wired lan. And add it as a network IP printer. Apparently the software (USB I'm assuming from reviews) is a sore spot for some. I see it up out of the box on my network and have never had any (non self inflicted) issues.
Edit: no software needed with IP, from any of my devices.
Lowering screen brightness, turn off keyboard back lighting.
But thing is, on some devices, certain power states just may not work.