The SBC vs motherboards

Isn't storage specific? eg not a useful PCIe slot for anything other than plugging in an SSD

High Performance Multifunctional Via694 with Isa Slot Mb X86 Single Board Computers Sbc 1 Isa Slot

slot maxhine Rugged 6U VME Single-Slot SBC; Core i7 @ GHz Processor; Two CoresFour Threads ; Intel® Virtualization

slot machine vlt The SBC has one SODIMM socket for one 200-pin DDR II SODIMM for system memory, up to 2 GB Network communications is achieved with the option of having Ethernet