58EnglishNote: To change the region code, insert a DVD movie of adifferent region into the DVD drive. Please refer to the onlinehelp for more information.Power managementThis computer has a built-in power management unit that monitors systemactivity. System activity refers to any activity involving one or more of thefollowing devices: keyboard, mouse, hard disk, peripherals connected to thecomputer, and video memory. If no activity is detected for a period of time(called an inactivity timeout), the computer stops some or all of these devices inorder to conserve energy.This computer employs a power management scheme that supports theadvanced configuration and power interface (ACPI), which allows for maximumpower conservation and maximum performance at the same time. Windowshandles all power-saving chores for your computer.Acer eRecovery ManagementAcer eRecovery Management is a tool to quickly backup and restore the system.You can create and save a backup of the current system configuration to harddisk, CD or DVD.Acer eRecovery Management consists of the following functions:1 Create backup2 Restore from backup3 Create factory default image CD, or burn bundled software to anapplication CD4 Re-install bundled software without CD5 Change Acer eRecovery Management passwordThis chapter will guide you through each process.Note: This feature is only available on certain models. For systemsthat do not have a built-in optical disk burner, plug in an externalUSB or IEEE 1394-compatible optical disk burner before enteringAcer eRecovery Management for optical disk-related tasks.