PCOM-B703G, Intel® Xeon® processors D-2100 NT Skylake-D family, with 2x DDR4 ECC DIMM sockets, 32 PCIe Gen3 lanes rearrangable for different combination of PCIe x16/x8/x4/x2/x1.
Hands-on GIGABYTE Server MB51-PS0 motherboard featuring 4 core Intel Xeon D-2123IT: unboxing in 4K | TinkerTry
Supermicro Supermicro MB-X10ST4B Intel Xeon D-1540 Mini-ITX Motherboard and CPU Combo at Lowes.com
Gigabyte MB51-PS0 Review The Big Intel Xeon D Platform
Supermicro X10SDV-4C+-TLN4F Motherboard Mini-ITX, System on Chip, Broadwell-DE, Xeon D 4-Core, 7-Year Product Life, Intel Xeon processor D-1518, Single socket FCBGA 1667; 4-Core, 8 Threads, 35W, System on Chip