1.Comply with IEEE 802.af Power over Ethernet (10/100M Supported) Extender the range of PoE an additional 250 meters. 2.Automatically detects and protects PoE equipment from being damaged by incorrect installation. 3.Plug-and Play no configuration required. 4.Used with AP, IP camera, IP telephone and the other network equipment in the situation of the lack of power line or far away from the power outlets. Support IEEE 802.3/802.3u,IEEE 802.3af/at Support Extend 250M function 4*10/100Mbps self-adaptive RJ45,support(Auto-/MDIX) 1*10/100Mbps self-adaptive RJ45 (Auto-/MDIX) Support 1K address Support EEPROM Support IEEE802.3 af/at All ports supports 2KV protection Support maximum forwarding packet length 2048 bytes Colour:White Material:plastic Package Contents: 1 x 4 Port POE Extender Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.