Components of computer motherboards

Universal

All motherboards have either these core components or some alternative for providing their functionality.

CPU socket RAM slots

Northbridge , Southbridge

Expansion slots

The number and type of expansion slots are determined by the motherboard manufacturer subject to limitations of the core logic chipset. Common slot types include:

ISA, PCI, AGP . PCI-Express

PCI

Optional peripheral interfaces

These components are entirely optional, although market economics has made some of them ubiquitous in modern computers.

IDE controller , Serial ATA controller , USB ports, Fire Wire ports, Bluetooth, Ethernet interface, SCSI

Serial ATA USB ports

Fire Wire ports

All information come from here

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