This object selects how the switch calculates PoE power-budget allocation for connected devices, consumption mode measures each device's actual real-time power draw, while classification mode allocates power based on the IEEE power class the device advertises during negotiation. An admin picks classification mode for more predictable, if sometimes conservative, power budgeting across many ports, or consumption mode to more efficiently pack devices onto a limited PoE power budget based on real usage. For example, switching zyPoeMode to consumption(0) might let the switch power more low-draw devices from the same total power budget than classification mode would allow.