A motherboard or main circuit board is the main printed circuit board (PCB) in Computer. It holds and allows communication between many of the crucial electronic components of a system, such as the central processing unit (CPU) and memory, and provides connectors for other peripherals. A motherboard usually contains significant sub-systems, such as the central processor, the chipset's input/output and memory controllers, interface connectors, and other components integrated. Motherboard means specifically a printed circuit board with expansion capabilities. As the name suggests, this board is often referred to as the "mother" of all components attached to it, which often include peripherals, Processor, Graphics cards, network cards, SSDs, hard drives and other forms of persistent storage, cards providing extra USB or FireWire slots, and a variety of other custom components. Mother Board sockets are different for separate generations of processors and of the two main processor manufactures Intel and AMD.