This read-write Integer32 (0..65535) defines the total power budget, in the device's power units, that the switch's power supply can deliver across all Power over Ethernet ports, used by the switch to balance PoE output allocation among ports. Admins set this to match the actual rating of the connected power supply so the switch doesn't try to promise more PoE power than the hardware can physically provide. For example, an admin installing a 250W PoE power supply would set this value accordingly so the device correctly denies power to additional devices once that budget is reached.