ftp://asrock.cn/manual/Fatal1ty%20H87%20Performance.pdf
page 93/94 of the manual shows the board does have the RTC Alarm Power On - its an option under ACPI Configuration of the UEFI Setup Utility (bios) - you can set it to start up the PC at a particular time using the onboard RTC (Real Time Clock)
and how to enter the UEFI Setup Utility:
This section explains how to use the UEFI
SETUP UTILITY to configure your system. You may run the UEFI SETUP UTILITY
by pressing <F2> or <Del> right after you power on the computer, otherwise, the Power-On-Self-Test
(POST) will continue with its test routines. If you wish to enter the UEFI SETUP UTILITY
after POST, restart the system by pressing <Ctl> + <Alt> + <Delete>, or by pressing the reset button on the system chassis.
You may also restart by turning the system off and then back on
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