TH7II Up in Flames

My TH7II recently caught on fire. The PCI 4 slot where I had my NIC card went up in flames.
Luckaly I unpluged the machine before it was destroyed, but it did leave that slot useless (toast) and the NIC melted.
Looks like the fire started somewhere in the third or fifth connector.
Very Weird but you guys have any clue why?

My NIC card is pluged into PCI 4 too!!!!! (linksys)

I've got NICs or modems in all of my #4 slots, and haven't lost a TH711 yet. And I run5 of them. Must be a fluke.

steve

a small particle of moisture may of caused some corrosion which might of caused a build of heat and so on and so forth till something cracks and then it gets reeeaaal bad i had this almost happen to a cheap modem the corrosion made enough resistance the pcb turned black.