Diagnosis for a server motherboard

A server motherboard diagnosis method, there being a management module of the server motherboard and peripheral devices managed by the management module capable of being powered by a server power source and a USB port, wherein in response to the management module of the server motherboard and the peripheral devices managed by the management module being powered by the USB port, a power supply line of the server power source is isolated, the method including:

• identifying the peripheral devices managed by the management module, in response to the management module of the server motherboard and the peripheral devices managed by the management module being powered by the USB port;
• for each of the identified peripheral devices managed by the management module, initializing the peripheral device, and then shutting down the power supply of the peripheral device;
• establishing a communication between the management module and a diagnosis host through the USB port;
• and
• executing a command in response to the command being received from the diagnosis host.