Amazon.com: SHANGZHAOYUAN X99 Dual CPU Motherboard LGA 2011-3 Server Motherboard for Intel i7 5th/6th Gen Xeon E5 V3/V4 Series (E-ATX, 8*DDR4 ECC Max 256G, 2*NVME M.2, 2*Gb LAN, SATA 6Gb/s, PCIe 3.0) :
Amazon.com: MACHINIST X99 Computer Motherboards, LGA 2011-V3 (Intel Core i7 5th/6th Gen) ATX Server Motherboard with VRM Fan (PCIe 3.0, Dual M.2, SATA 6Gb/s, DDR4, Gigabit Ethernet) for Intel XEON E5 V3/V4
Supermicro X8DT6-f Dual-Socket LGA1366 E-ATX Server Motherboard Xeon E5620 Cpu | eBay
Dual Intel Xeon E5-2600 v4 E5-2600 v3 server motherboard X10DRL-i for supermirco - AliExpress
LGA 1200 Intel® Xeon® W & 10th Gen. Core™ ATX Server Board with 4 x DDR4, 5 x PCIe, 2 x PCI, 4 x USB 3.2, 5 x SATA 3, Quad/Dual LANs, and IPMI - CoastIPC