Sure. You can even do it with the remote that came with the mobo. But only the 2 usb ports that are closest to the LAN port are capable of it. But would you want your system to turn on if say someone accidently touched the mouse button?
The remote is a little pointless IMHO, but the single click on the mouse to power up is fab. I checked and mouse movement does not trigger it, just the click, so the chances of accidental power up are small, and not the end of the world if it did ever happen.
I have had this system for about 5 months, and only just found this out, so can’t happen accidentally that much