Zyxel 16-Port Unmanaged POE Ethernet Switch with 10/100 Mbps [ES1100-16P] Supports industry standard IEEE 802.3af to guarantee compatibility with other 802.3af PoE devices. Enables power over existing CAT5, removing the need for an external power supply. Allows deployment in places without traditional power sockets, eliminating added cost for running extra power lines. Traffic Detection automatically reduces power consumption during times of low network utilization. Inactive Link Detection dynamically adjusts power consumption based on the number of active network devices.