Intel® C621 motherboard with quad-strength graphics support and 12 DDR4 memory slots Up to 4-Way NVIDIA® SLI®and AMD® Crossfire X™ on demand Two-way Xeon® CPU OC tuning for extreme performance Superb scalability and connectivity with onboard U.2, M.2, and USB 3.1 Type-C and Type-A Built with premium components for excellent power efficiency Easy Management and maintenance with ASUS Control Center (ACC) management software and USB BIOS Flashback CPU * Refer to www.asus.com for CPU support list Dual Intel® Socket P (LGA 3647) for Intel® Xeon® Scalable Processors Family (205W) Chipset Build in Intel® C621 Memory 12 x DIMM, Max. 768GB, DDR4 2666/2400 MHz RDIMM, LR-DIMM Memory * Please refer to ASUS AVL for the latest update. * Actual memory frequency differs from Intel CPU types and memory module. Please check Intel official site for more detail about the memory types supported by each CPU. Graphic Integrated Graphics Processor VGA port(Optional) - Supports VGA with max. resolution 1920 x 1200 @ 60 Hz Aspeed AST2500 with 64 MB VRAM Multi-GPU Support Supports NVIDIA® 4-Way SLI™ Technology *1 Supports AMD 4-Way CrossFireX Technology *1 Expansion Slots 3 x PCIe 3.0 x16 (x16 mode) 2 x PCIe 3.0 x16 (Single at x16, dual at x8/x8) 2 x PCIe 3.0 x16 (x8 mode) Storage Intel® C621 Chipset : 8 x SATA 6Gb/s port(s), Support Raid 0, 1, 5, 10 ASMedia® SATA 6Gb/s controller : 2 x SATA 6Gb/s port(s), 4 x U.2 connector, 1 x M.2 Socket 3, with M Key, type 2242/2260/2280/22110 storage devices support (both SATA & PCIE mode) LAN Intel® I210-AT, 2 x Gigabit LAN Controller(s)