Single socket H4 (LGA 1151) supports Intel Xeon processor E3-1200 v6/v5 Support Intel VHD with selected CPU Up to 64GB Unbuffered ECC UDIMM DDR4 2400MHz; 4 DIMM slots Expansion slots: 1 PCIe 3.0 x8 (in x16), 1 PCIe 3.0 x8, 1 PCIe 3.0 x4 (in x8) M.2 NGFF connector