Have another look at your manual m8… there are a lot of options for wake,
“Wake from bios” is the motherboard controls everything and this can tell the computer to start back up again in the event of power failed… “wake from os” is just the normal let windows decide.
Wake from bios can also wake the computer at a set time i.e. 9am every day or every Monday as well as the normal usb mouse and lan settings that every computer has… My friends’ daughter has this board and yes, it can get a little messy but the manual has the settings and I like this model because you can save the settings to a usb for easy backup.
Also note if you upgrade to 8.1 but don’t allow updates that windows 8.1 has a known “secureboot” bug that can block wake...