ASRock X99 OC Formula/3.1 LGA 2011-v3 Intel X99 SATA 6Gb/s USB 3.1 USB 3.0 Extended ATX Intel Motherboard Memory Standard: DDR4 3400+*(*OC)/ 2933*/ 2800*/ 2400*/ 2133 Number of Memory Slots: 8×288pin Audio Chipset: Realtek ALC1150 PCI Express 3.0 x16: 5 x PCI Express 3.0 x16 Slots (PCIE1/PCIE2/PCIE3/PCIE4/PCIE5: single at x16 (PCIE1); dual at x16 (PCIE1) / x16 (PCIE4); triple at x8 (PCIE1) / x8 (PCIE2) / x16 (PCIE4); quad at x8 (PCIE1) / x8 (PCIE2) / x8 (PCIE4) / x8 (PCIE5))* * If you install CPU with 28 lanes, PCIE1/PCIE2/PCIE3/PCIE4/PCIE5 will run at x16/x0/x4/x8/x0 or x8/x8/x4/x8/x0, and PCIE5 will be disabled. Max LAN Speed: Dual 10/100/1000Mbps CPU Type: Intel Core i7 and Xeon 18-Core Processors Family for the LGA 2011-3 Maximum Memory Supported: 128GB Mini Card Slots: 1 x Half-size Mini-PCI Express Slot