A motherboard is a printed circuit board (PCB) that connects all parts of a computer, allowing power and data distribution between them.
Motherboards are not universal. They come in different sizes and layouts to fit various computer cases. Different motherboard types also support different components, making choosing a motherboard the first and most important part of building a computer.
Popular motherboard manufacturers include Acer, Asus, Intel, ASRock, and Gigabyte Technology.