Abstract: An example power source device includes a universal serial bus interface to couple to a power sink device, a power supply interface to couple to a power supply, a power measurement controller to measure a total power consumption of the power sink device and the power source device, a power contract manager to select a power delivery contract for the power sink device based on the total power consumption, a power supply rating of the power supply and a previous power delivery contract, and a power delivery controller to deliver power to the power sink device according to the selected power delivery contract.

Abstract: In some examples, a non-transitory machine-readable medium can include instructions executable by a processing resource to: monitor system power for a computing system that includes a first computing component type and a second computing component type, determine a power event type for the computing system based on the monitored system power, and alter a power limit of the second computing component type by a predetermined increment based on the power event type while maintaining a power limit of the first computing component type when the second computing component type is a sub-system of the computing system.

Abstract: In some examples, a non-transitory machine-readable medium can include instructions executable by a processing resource to: monitor system power for a computing system that includes a first computing component type and a second computing component type, determine a power event type for the computing system based on the monitored system power, and alter a power limit of the second computing component type by a predetermined increment based on the power event type while maintaining a power limit of the first computing component type when the second computing component type is a sub-system of the computing system.

Abstract: An example power source device includes a universal serial bus interface to couple to a power sink device, a power supply interface to couple to a power supply, a power measurement controller to measure a total power consumption of the power sink device and the power source device, a power contract manager to select a power delivery contract for the power sink device based on the total power consumption, a power supply rating of the power supply and a previous power delivery contract, and a power delivery controller to deliver power to the power sink device according to the selected power delivery contract.

Abstract: In some examples, a non-transitory machine-readable medium can include instructions executable by a processing resource to: monitor system power for a computing system that includes a first computing component type and a second computing component type, determine a power event type for the computing system based on the monitored system power, and alter a power limit of the second computing component type by a predetermined increment based on the power event type while maintaining a power limit of the first computing component type when the second computing component type is a sub-system of the computing system.

Abstract: In some examples, a non-transitory machine-readable medium can include instructions executable by a processing resource to: monitor system power for a computing system that includes a first computing component type and a second computing component type, determine a power event type for the computing system based on the monitored system power, and alter a power limit of the second computing component type by a predetermined increment based on the power event type while maintaining a power limit of the first computing component type when the second computing component type is a sub-system of the computing system.

Abstract: In one example in accordance with the present disclosure, a power management device is described. The power monitoring device includes an input line to receive input power information from a power supply device. The input power information is indicative of a level of input power from the power supply device. A controller of the power monitoring device determines a scaling amount of the input power information based on a power rating of the power supply device. A programmable scaling device scales the input power information based on the scaling amount to generate output information and an output line passes the output information to a set of recipient devices.

Abstract: A circuit includes a port manager to monitor requested port power from each of a plurality of universal serial bus (USB) ports. The port manager sets a separate port variable for each of the USB ports that indicates a priority in which each of the USB ports have requested port power. A controller monitors the separate port variables from the port manager for each of the USB ports. The controller delegates power to the USB ports based on the priority assigned by the port manager.

Abstract: In one example in accordance with the present disclosure, a power management device is described. The power monitoring device includes an input line to receive input power information from a power supply device. The input power information is indicative of a level of input power from the power supply device. A controller of the power monitoring device determines a scaling amount of the input power information based on a power rating of the power supply device. A programmable scaling device scales the input power information based on the scaling amount to generate output information and an output line passes the output information to a set of recipient devices.