Quad socket R3 (LGA 2011) supports Intel® Xeon® processor E5-4600 v4/v3 family (up to 22-Core)
Intel® C612 chipset
Up to 6TB 3DS LRDIMM, up to DDR4-2400MHz; 48 DIMM slots
Riser card support: Left - 1 PCI-E 3.0 x32 Right - 1 PCI-E 3.0 x40 Right - 1 PCI-E 3.0 x8 (in x16) 2 PCI-E 3.0 x16 for NVMe/Internal card support (front right and front rear)