62 Users ManualSystem ManagementUsing Power Management OptionsYour computer includes Power Management options that can help the battery chargelast longer and extend the life of the battery. Power-management options will slowdown or shut off system components when the components are not being used.Power management may slow down system performance. Your computer runs fastestwith the power cord attached, when power management is disabled.In the next sections, basic and advanced methods of power management will bediscussed.Basic Power Management SchemesThis section discusses the basic schemes of power management when the computer isoperating on battery power or using AC power.Standby vs. HibernationHibernation is a state where the contents of memory are stored in a special fileon the hard disk, and Standby simply keeps a small holding current throughthe memory to keep the data. You are more likely to sustain loss of data inStandby mode so it is recommended to save all open files before enteringStandby.Changing Devices:Do not change PC Cards while in standby or hibernate modes.To enter the power management window complete the following:1. Click Start > Control Panel > Performance and Maintenance.2. Click icon to display the Power Options Properties window.