Abstract: A network device includes ports to communicate with and provide power to devices connected thereto. The network device serves access points (APs) that connect wirelessly to client devices. The network device detects that a client device has wirelessly connected to or disconnected from an AP that is connected to the network device. Responsive to the detecting, the network device accesses predetermined power control information associated with the client device. If the power control information identifies one or more of the multiple ports, the network device selectively provides power to the identified one or more ports when the client device is detected as being connected to the AP and removes power from the identified one or more ports when the client device is detected as not being connected to the AP.

Abstract: In an embodiment, a system can include a temperature sensor configured to sense a temperature at a part of the system, resulting in temperature data. The system can also include a power source configured to provide power and network data to a powered device circuit. The powered device circuit may be configured to provide the power and the network data to a powered device. The system may also include a current limiting module configured to maintain a maximum limit of current drawn from the power source by the powered device circuit, and a control module configured to control the current limiting module to adjust the maximum limit of the current drawn from the power source by the powered device circuit, according to the temperature data.