Intel W580 express chipset, LGA1200 Socket, 4x DDR4 DIMM (128GB Max), 2x DP, 1x HDMI, Quad Ethernet, 8x USB, 1x PCIeX16 Expansion (4.0), 1x PCIeX4 Expansion (3.0), 4x 3.5" HDD Capacity, 2x M.2 2280 M-Key, 1x M.2 2230 E-key. Supports ECC RAM