Users usually use SBC industrial motherboards when the slots on other motherboards do not meet their needs and they need more PCI and ISA slots. Since these motherboards do not have these slots, an industrial package must be used to use these motherboards. The backplane is a slot plate on which both the motherboard and the cards are mounted. The bases of this type of motherboard, which are placed in the backplane slot, consist of one ISA and one PCI, and usually they can communicate with the PCI and ISA cards that are placed on the backplane. As a rule, this series of motherboards have the ability to connect with ISA cards and support old operating systems.