Abstract: The invention relates to a computer system including at least one power supply for providing a standby voltage and at least one system board with a plurality of system components arranged thereupon. A first group of system components of the plurality of system components is connected to the at least one power supply via a first supply path for providing the standby voltage. A second group of system components, different from the first group, of the plurality of system components is connected to the at least one power supply via a second supply path for providing the standby voltage which is electrically independent of the first supply path. The described computer system or the described system board allow reliable provision of a standby voltage for system-critical components of the computer system.

Abstract: A computer system that includes at least one fan and at least one power supply. The at least one power supply provides a main voltage in a first operating state of the computer system, and provides an auxiliary voltage in a second operating state of the computer system. The computer system also includes a first control device, which monitors power consumption of the system in the second operating state. The system includes at least one switching device which connects the at least one fan with the main voltage in the first operating state, and connects the at least one fan with the auxiliary voltage in the second operating state when the first control device registers a power consumption below a value, and disconnects the at least one fan from the auxiliary voltage in the second operating state when the first control device registers a power consumption above a value.

Abstract: A computer system includes a power supply unit, a system component including at least one processor, a microcontroller and a memory functionally connected to the microcontroller and stores information relating to an interruption in at least one operating voltage of the computer system. When at least one secondary standby voltage is applied to the microcontroller and the information relating to an interruption in the primary supply voltage of the computer system is read from the memory, the microcontroller is configured to selectively switch the computer system to a first operating state on the basis of the information which has been read.

Abstract: A computer system includes a power supply unit, a system component including at least one processor, a microcontroller and a memory functionally connected to the microcontroller and stores information relating to an interruption in at least one operating voltage of the computer system. When at least one secondary standby voltage is applied to the microcontroller and the information relating to an interruption in the primary supply voltage of the computer system is read from the memory, the microcontroller is configured to selectively switch the computer system to a first operating state on the basis of the information which has been read.