A motherboard is the main printed circuit board (PCB) in a computer or electronic device that connects and allows communication between various components such as the central processing unit (CPU), memory (RAM), storage devices, and input/output devices. It serves as the central hub that houses the essential circuitry and connectors required for the operation of the device.

Motherboards are used in a wide range of devices, including desktop computers, laptops, servers, and embedded systems. They come in different form factors, depending on the size and design requirements of the device.