Acer Aspire M3-581TG - Manual (Page 59)

Power management - 57
P
OWER MANAGEMENT
This computer has a built-in power management unit that monitors system
activity. System activity refers to any activity involving one or more of the
following devices: keyboard, mouse, hard disk, peripherals connected to
the computer, and video memory. If no activity is detected for a period of
time, the computer stops some or all of these devices in order to conserve
energy.
Acer Green Instant On
Note: For selected models only.
The Acer Green Instant On feature allows your computer to wake up from
Sleep mode in less than the time it takes to open the lid. When you close
the lid, or leave your computer for a while, your computer enters Sleep
mode. While the computer is in Sleep mode, the power indicator LED will
flash orange.
Open the lid or press any key to wake the computer from Sleep mode.
After a certain amount of time in Sleep mode, the computer will
automatically enter Deep Sleep to preserve battery life. When the
computer is in Deep Sleep, the power indicator LED will be turned off. In
this state, battery remains ready to use for many weeks.
Press the power button to wake up from Deep Sleep.