A server is provided, and the server includes an embedded management board (EMB), a management backplane and a plurality of independent motherboards. The management backplane is coupled to the EMB. The plurality of motherboards respectively coupled to the management backplane and issues a command for performing a data-update on the EMB. Each motherboard of the plurality of independent motherboards includes a network interface and a management controller. The network interface receives a control command issued from a far-end device. The baseboard management controller coupled to the network interface for receives the control command and sends the command to the plurality of independent motherboards, wherein the each motherboard of the plurality of independent motherboards includes an individual on/off function. When the EMB is working, the EMB switches to connect with the plurality of motherboards through the management backplane by an polling method.