An Advanced Telecom Computing Architecture, ATCA, system, comprising: a Rear Transition Module, RTM/Front Transition Module, FTM; and a Front Board, FRB, comprising a first power conversion/control module that supplies a power to the FRB and the RTM/FTM; a control circuit, adapted to output a control signal; and a second power conversion/control module, adapted to receive the power from the first power conversion/control module, and supply the power from the first power conversion/control module to the RTM/FTM according to the control signal; wherein the second power conversion/control module divides the power supplied by the first power conversion/control module to the RTM/FTM into a management power and a load power, and supplies the management power and the load power to the RTM/FTM according to the control signal; the second power conversion/control module is located in the FRB; and the control circuit comprises: an Intelligent Platform Management Controller, IPMC, adapted to output the control signal that permits supplying the management power, if it is determined that the RTM/FTM is plugged in a slot on the FRB according to a state of "in position" signal of the corresponding slot; wherein the second power conversion/control module supplies the management power to the RTM/FTM, according to the control signal that permits supplying the management power; a handle switch, adapted to output the signal for requesting the activation of the RTM/FTM if it is determined that the the RTM/FTM is plugged in a slot on the FRB according to a state of "in position" signal of the corresponding slot and a handle of the RTM/FTM is closed; and a Module Management Controller, MMC, adapted to output the signal for requesting the supply of the load power, according to the signal for requesting the activation of the RTM/FTM; wherein the IPMC outputs the control signal that permits supplying the load power, according to the signal for requesting the supply of the load power; and the second power conversion/control module supplies the load power to the RTM/FTM, according to the control signal that permits supplying the load power. a Rear Transition Module, RTM/Front Transition Module, FTM; and a Front Board, FRB, comprising a first power conversion/control module that supplies a power to the FRB and the RTM/FTM; a control circuit, adapted to output a control signal; and a second power conversion/control module, adapted to receive the power from the first power conversion/control module, and supply the power from the first power conversion/control module to the RTM/FTM according to the control signal; an Intelligent Platform Management Controller, IPMC, adapted to output the control signal that permits supplying the management power, if it is determined that the RTM/FTM is plugged in a slot on the FRB according to a state of "in position" signal of the corresponding slot; a handle switch, adapted to output the signal for requesting the activation of the RTM/FTM if it is determined that the the RTM/FTM is plugged in a slot on the FRB according to a state of "in position" signal of the corresponding slot and a handle of the RTM/FTM is closed; and a Module Management Controller, MMC, adapted to output the signal for requesting the supply of the load power, according to the signal for requesting the activation of the RTM/FTM;