Amazon.com: Supermicro X11DPL-I Server Motherboard - Intel Chipset - Socket P LGA-3647-1 x Retail Pack : Everything Else
Supermicro X11DPI-N Motherboard ATX Intel C621 Chipset Dual Socket P (LGA 3647) for Intel Xeon Scalable Processors Gen.2 | Wiredzone
Amazon.com: ASUS WS C621E Sage Extreme Power Intel® Xeon® Processor Workstation Motherboard for Two-way XEON CPU performance, with U.2, M.2 connectors, dual Gb LAN, USB 3.1 Type-C & Type-A, 10 x SATA