Advanced Power Management
<hardware> (APM) A feature of some displays, usually but not always, on laptop computers, which turns off power to the display after a preset period of inactivity to conserve electrical power.
Monitors with this capability are usually refered to as "green monitors", meaning environmentally friendly.
Not to be confused with a
screen blanker which is
software that causes the display to go black (by setting every
pixel to black) to prevent
burn-in.
