Board Layout. The Supermicro X9SCMF is a micro ATX board which means it is constrained to the relatively small ″ by ″ square footprint. Supermicro X9SCMF Overview. Whereas the Supermicro X8SILF had two PCIe x8 slots, one PCIe x8 slot (x4 electrically) and a legacy PCI slot, the X9SCMF has four physical PCIe x8 slots.