The motherboard died on a gaming laptop belonging to a friend of mine, and I am rebuilding it as a desktop as a favor for him.
According to the specs from alienware's website and several reviews online, the graphics cards are two AMD ATI Mobility Radeon HD 5870 GPUs in a crossfire configuration.
When I pulled the GPUs, I was a little confused; the interface was clearly not a standard PCIe interface, about 3 1/4" wide with a single space between pins roughly in the middle of the pins (whereas the PCI cards I've dealt with have had their gap significantly to one side). I did some research on legacy ports and newer PCI interfaces, but nothing Looks right from what I've seen.
In selecting a motherboard I obviously should be looking for one with crossfire support, but what interface do I need for the cards?
Here is a picture of a card with the same interface: