Deliver power and data to four PoE-powered devices (PD) using this wall-mountable PoE+ midspan hub - 4 Port Gigabit Power over Ethernet Midspan - 802.3at and 802.3af - Wall-mountable Power over Ethernet Injector - Delivers more power with up to 30 w per port - Eliminate the cost and hassle of upgrading your existing ethernet switch to a PoE-capable model - Desktop-sized housing with flexible and easy plug-and-play operation - Detects your PoE PDs and provides the proper level of power - PoE Plus.