


Motherboards can come with integrated I/O ports these are usually found as a rear port cluster. The form factor is the design of the motherboard, which the case and power supply must comply with. The location and orientation of these busses will vary depending on the type of form factor used. Together, these buses carry all the information between the different parts of the computer. The motherboard is essential to computer operation in large part because of the two major buses it contains: the system bus and the I/O bus.
