Alternatively referred to as the mb, mainboard, mobo, mobd, backplane board,base board, main circuit board, planar board, system board, or a logic boardon Apple computers. The motherboard is a printed circuit board that is the foundation of a computer, located at the bottom of the computer case. It allocates power to the CPU, RAM, and all other computer hardware components. Most importantly, the motherboard allows hardware components to communicate with one another.
Below is a picture of the ASUS P5AD2-E motherboard with names of each major component of the motherboard. Clicking on the image below gives you a larger more detailed version of the picture below.
Below are links to pages with more details for each of the above mentioned motherboard components. Links are listed in clockwise order going from the top-left corner of the image. Components not listed above or found on other motherboards are listed in the next section.