The PoE extender/switch does not require local power and is powered via the Uplink port PoE input.Additionally, it supports DC power input: DC 12V-57V, 5.5x2.1mm DC port,Supports PoE++ (802.3bt) power input, with a maximum of 90 watts input, and a total power output of 72 watts for LAN1-LAN4 PoE.Supports PoE+ (802.3at) output on LAN1-LAN4.LAN1-LAN4 Ext mode: Maximum network cable length up to 250 meters, Ethernet speed: 10 Mbps,LAN1-LAN4 LAN mode: Maximum network cable length up to 100 meters, Ethernet speed: 1000 Mbps,Automatically detects and protects PoE equipment from damage.Supports IEEE 802.3af/802.3at/802.3bt (maximum 90 watts) Power over Ethernet (PoE) switch,Supports DC 48V-57V passive Power over Ethernet PoE switch,Supports DC 48V-57V passive Power over Ethernet PoE injector,The PoE extender/switch has 5 10/100/1000 Mbps PoE ports, with the Uplink port for PoE input (compliant with IEEE 802.3bt/802.3at/802.3af) and LAN1-LAN4 ports for PoE output (compliant with IEEE 802.3at/802.3af). All ports comply with 10/100/1000BASE-TX.PoE extenders can increase the mission distance to 100-250 meters via Cat5E/6E UTP cables. This offers great flexibility in extending PoE distance.When the DC interface input voltage is lower than DC 40V, PoE output on LAN1-LAN4 is disabled. If PoE functionality is required, it is recommended to use a DC 48V-57V power supply.Note: When Ext mode is enabled, the maximum bandwidth for LAN1-LAN4 network ports is reduced to 10 Mbps per port. Please check your IP camera's bit rate settings. We recommend that the bit rate does not exceed 8 Mbps (8192 Kbps).Support IEEE 802.3af/at/bt power supplySupport DC 5.5x2.1 port input power supplyDC Input Power Pin: positive inside (+), negative outside (-)Support non-standard PoE 48-57V power supplyPoE total input power: 90 wattsPoE total output power: 72 wattsMaximum power output of a single PoE port: 25 wattsm