Supermicro: We Put Two 10nm Ice Lake Xeon LGA4189 Sockets on an ATX Motherboard - AnandTech

Both the Supermicro X12DPL-NT6 and X12DPL-i6 conform to the ATX form factor and have a very similar design.

Both models also include two PCIe 4.0 x4 M.2 slots, supporting both 22110/2280 M.2 form factors, while the second port is limited to 2280 M.2.

It includes a dual 10 G-Base T Ethernet powered by an Intel X550 controller, which is cooled by a heatsink, and it also includes an additional PCIe 4.0 x8 port for NVMe drives.

The Supermicro X12DPL-i6 instead dual Intel i210 Gigabit controllers and does not have the additional PCIe 4.0 x8.