"Advanced Power Management" (APM) is an industry standard for managing computer power and energy consumption.

Computers which comply to this standard are able to reduce power consumption by switching into the "suspend" state. Besides, they do not have to be switched off manually, but can turn off their own power.

APM is especially useful on laptops. By using APM functions, applications can query the current battery state of the system as well. For example, the &xcenter; has a battery widget that will show you the current energy state of the laptop.

To function correctly,

Older systems only support the APM 1.1 level, which has certain limitations. &os2; can support APM 1.2; however, for this to work, your computer's BIOS must be able to support APM 1.2 as well.