Yes, power on by Keyboard (PS/2) and Mouse (PS/2) is in the BIOS, as is power on via USB Device (Hidden), they are Disabled by default.
You will find them in the Power Management page of the BIOS, you will need to enable Keyboard.
If you plan to use a keyboard you need to be sure your power supply always provides at least 1A on the +5VSB lead otherwise it will not function.
Power on by PS/2 mouse is much easier, I'd use that if you have a PS/2 mouse.