5-Port Gigabit Po E+ Powered Edge Smart Switch with Po E Pass Through, model TPE-P521ES, is powered by a Po E+ switch or injector, no AC adapter is required. It features two gigabit non-Po E ports, & two gigabit Po E ports to power devices such as IP cameras, Vo IP handsets, & wireless access points. Reducing unnecessary switch complexity, this Edge Smart switch is equipped with only the most commonly used managed switch features. The simple web-based user interface means that you can easily manage VLANs, Qo S, & monitoring.