PoE ports provide electrical current to devices through the network cables so that separate power cords for devices such as IP phones, wireless access points, and security cameras are unnecessary. Both the EX 3200 and EX 4200 switch lines have options of full (all 24 or 48 ports) or partial (8 ports) PoE capability.
Full PoE models are primarily used in IP telephony environments. Partial PoE models are used in environments where, for example, only a few ports for wireless access points or security cameras are required.