Chapter 3 Award BIOS Setup 57Power Management SetupPower-Supply TypeWe offer two version PCM-6894 of different power supply types:AT or ATX. Please select the corresponding type of your board inthis item. AT type board doesn't support the following functions:"ACPI", "Modem ring in", and "Soft-off by PWRBTN" etc..ACPI Function(only for ATX type)ACPI (Advanced Configuration and Power Interface) is an openindustry specification co-developed by Compaq, Intel, Microsoft,Phoenix, and Toshiba. It establishes industry-standard interfacesfor OS-directed configuration and power management on laptops,desktops, and servers.If you want to manage power consumption well, please "Enable"this item.The choices: Enabled, Disabled.