it is only a single rail. there is SATA power cables in the box, 2 of them. for pci-e you'd have to get a molex to 4/6 pin adapter if your card takes external power, if not a 20 to 24 pin adapter cable
I'm running my pci-e video card using an adapter off it, and the psu is slowly dying, but I give it another 3 months, time to order another probably