AsRock Rack GENOAD8UD-2T/X550 Deep Micro-ATX Server Motherboard, Single Socket SP5 (LGA 6096),8 x DDR5 DIMM Slots 512GB Max, Dual 10G LAN, PCIe5.0 x4 | GENOAD8UD-2T/X550

Rack GENOAD8UD-2T/X550 Genoa Motherboard The form factor. This is not a 9.6″ x 9.6″ mATX form factor or a 12″ x 9″ ATX form factor. Instead, it is 10.4″ x 10.5″. Even with a non-standard size, even finding room for the motherboard standoff mounting points appears as though it was more challenging for ASRock Rack. That non-standard chassis also meant that the first chassis we tried to build this motherboard into did not fit. ASRock Rack GENOAD8UD 2T X550 CPU Sockets And Memory