Hikvision DS-3E1105P-EI/M 4 Port Fast Ethernet Smart POE Switch, 4 × 10/100 Mbps PoE port,1 × 10/100 Mbps RJ45 port, Total PoE Power Budget, 45W, 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, MAC Address Table: 2K, Switching Capacity: 1.2Gbps, Packet Forwarding Rate: 0.89Mpps, Internal Cache: 768 Kbits, 6KV Surge Protection.