This product is either discontinued or we cannot get that from suppliers.
ASUS WS C621E SAGE LGA 3647 EEB Motherboard, Chipset C621, Dual Socket P LGA-3647 for Intel Xeon Scalable CPU(205W), 12x DIMM Max. 768GB DDR4 2666/2400 MHz RDIMM, LR-DIMM Memory, 4x U.2, 1x M.2, 2x USB 3.1 Gen2, 8x USB 3.1 Gen1, 4x USB 2.0, Intel I210-AT, 2 x Gigabit LAN, Realtek S1220A 7.1 Channel HD Audio, 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), 10x SATA 6Gb/s (8 via Chipset, 2 via ASMedia).
ASUS WS C621E SAGE accommodates up to four dual-width graphic cards with a four true PCIe Gen3 x16 link to unleash maximum graphic perform