ASRock Z77 Pro4, LGA 1155, Intel (90-MXGKS0-A0UAYZ

z77 slotThe Z77 Extreme4 expansion slot area features one PCI-e X16, one PCI-e X8, two PCI-e X1, and two PCI slots. A single graphics card will operate at X16 speeds, but two cards32GB. Expansion Slots. PCI Slots, 1 xPCI Express 3.0 *2.0 x16 slot (x16 mode) 1 xPCI Express 2.0 x16 slot (maximum x4 mode, compatible with