A Mini-ITX motherboard has just one PCI slot for enlargement cards. A pc based on a Mini-ITX form issue can be used in locations where it is inconvenient to have a big or noisy computer. Serial Advanced Technology Attachment ports let you join mass storage to the motherboard. These embody onerous disk drives , optical drives, and solid-state drives . If you propose to make use of a quantity of mass storage devices, then you definitely would need more SATA ports.