Abstract: A method of updating firmware of a server rack system includes: receiving, by a rack management controller (RMC), a firmware updating program; broadcasting, by the RMC, an update notification to a rack back plate (RBP); after receiving the update notification, transmitting one by one, by the RBP, request messages which are associated with respective ones of sections of the firmware updating program to the RMC; responding, by the RMC, to each of the request messages by transmitting the respective one of the sections to the RBP; and after receiving the sections of the firmware updating program, recovering, by the RBP, the firmware updating program at least from the complete sections for subsequent firmware update.

Abstract: A computer apparatus includes a first power supply, a first power distribution board, a second power supply, a second power distribution board, motherboards, and a control module. The first power supply provides a first power. The first power distribution board is coupled to the first power supply to transmit the first power. The second power supply provides a second power. The second power distribution board is coupled to the second power supply to transmit the second power. Each of the motherboards generates a working state. The control module coupled to the first power distribution board, the second power distribution board, and the motherboards determines whether to generate a control signal based on the working states of the motherboards and a working state of the first power supply and/or a working state of the second power supply to enable a power throttling feature to adjust power consumption of the motherboards.