Im trying to switch out mobos. i want to put a desktop mobo in a minitower case. but my understanding there is a jumper that can be changed to switch between the models. Has something to do with the power supply differences if I remember correctly. anyone know where on the motherboard that would be located? in need to find it because currently using the desktop mobo in the minitower case it will not power on at all.any help would be appreciated.