Motherboard and computing device

A computing device, comprising a motherboard, wherein the motherboard comprises:

• a first daughter board of the motherboard as a basic computing unit, provided with a basic component and a first external interface, wherein the basic component comprises a component in a minimum system that provides a general computing capability;
• and
• a plurality of second daughter boards of the motherboard as extension units, configured to implement functional expansion of the basic computing unit
• wherein the extension units are connected to respective extension components, and connected to the first external interface of the basic computing unit through their respective second external interfaces, such that the respective extension components are connected to the basic computing unit through their respective extension units, wherein each of the respective extension components includes at least one of an input/output (I/O) unit, a storage unit, an acceleration unit or a memory expansion unit;
• and
• wherein the extension units include a first extension unit and a second extension unit that are connected to different types of extension components.