Hi there, I'm looking to build my own pc in the near future hear and I have kind of a dumb question about Motherboads. I am looking online at various mobo's and a bunch of them say 4-way crossfire/sli support... but in the pictures I only see 3 PCI-e slots. Am I missing something here? Is there another way to hook up 4-way that I don't know about? I know i'll probably never need 4-way, but I also like being prepared... Thanks!