Supermicro MBD-X12SPA-TF-O Extended ATX Server Motherboard Intel C621A Chipset Socket LGA 4189 3rd Gen Intel Xeon Supported
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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