Asus P1-AH2 - Manual (Page 86)

5-28 Chapter 5: BIOS setup
Power Up On PCI/PCIE Devices [Disabled]
Disable/Enable PME to wake up from S5 by PCI devices & NV onboard LAN.
Configuration options: [Disabled] [Enabled]
Power On By External Modems [Disabled]
Disable/Enable wake up by ring function.
Configuration options: [Disabled] [Enabled]
Power On By RTC Alarm [Disabled]
Enable or disable the power on by RTC alarm function.
Configuration options: [Disabled] [Enabled]