4 Port Fast Ethernet Smart POE Switch 4 × 10/100 Mbps PoE port,1 × 10/100 Mbps RJ45 port 6 KV surge protection for PoE ports. Total PoE Power Budget 60W Support 802.1Q VLAN Support PoE watchdog to detect and restart the cameras that do not respond Support STP/RSTP Loop prevention Support cable detection to locate failure Up to 300 m Long Range PoE Transmission General ShellMetal material Net Weight0.26 kg (0.573 lb) Gross Weight0.75 kg (1.65 lb) Dimensions (W × H × D)121.1 mm × 27.6 mm × 83.1 mm (4.77'' × 1.09'' × 3.27'') Operating Temperature0 °C to 40 °C (32 °F to 104 °F) Storage Temperature-40 °C to 85 °C (-40 °F to 185 °F) Operating Humidity5% to 95% (no condensation) Relative Humidity5% to 95% (no condensation) Power Supply54VDC, 1.2A Installation ModeDesk-Mounted,Wall-Mounted Max. Power Consumption65 W Power Consumption In Idle0.9 W Surge Protection6 KV Network Parameters Portos4 × 10/100 Mbps PoE port,1 × 10/100 Mbps RJ45 port MAC Address Table2 K Switching Capacity1 Gbps Packet Forwarding Rate0.74 Mpps Internal Cache768 Kbits PoE Power Supply PoE StandardIEEE 802.3af,IEEE 802.3at PoE Power PinEnd-span: 1/2(-), 3/6(+) PoE PortPoE: Ports 1 to 4 Max. Port Power30 W PoE Power Budget60 W Software Function Long Range Ports 1 to 4: up to 300 m. Long range performance may vary depend on camera model or cable condition. VIP PortPorts 1 to 2: data on VIP ports is preferentially forwarded when bandwidth resources are insufficient.