Abstract: The present application relates to Ethernet-based power sourcing equipment capable of supporting both standard and non-standard powered devices It includes: a control module for, determining the device specifications (I.e., device type, operating power and target power supply mode of a powered device) and outputting corresponding control signal a management module for managing a power provisioning status and a power output of respective ports, according to instructions of the control module; a first power module for providing a first voltage; a first power conversion module for converting the first voltage into a second voltage; a power selection module for controlling the first voltage or the second voltage to be output through the voltage output terminal, according to the output control signal of the control module.