While checking power to new motherboard without cpu or memory installed all was well meaning fans would start and stop. After installing firewire-usb module, just a short cord from board to rear of case, when power was turned on a brief flash occurred just above the motherboard socket for the ieee-1349 connection. To my way of thinking this should not have happened. Sounds like a defective board to me. No firewire devices were connected to the module. This is a new board and I'm trying to build a case for replacement. I'm sure the manufacture will say CID (customer induced damage)