24 Gigabit Ethernet PoE+ ports and 4 Gigabit RJ45/SFP combo ports Wide operating temperature range from -20° to +65° C for industrial or extreme environments Dual PoE power consumption budget delivers up to 500W in classic mode and 300W in industrial mode (standard) Create a surveillance VLAN with one click and instantly automatically discover and include all devices Alive check of PoE powered devices to improve network reliability Dual firmware image for robust failover mechanisms Guaranteed PoE long distance up to 200 meters Backfeed protection to not damage the PoE ports IP surveillance VLAN and voice VLAN to improve video and voice quality DHCP snooping to protect the integrity of the legitimate DHCP server and its operations Compliant with IEEE 802.3af/at PoE, up to 30W prp port (power consumption total: 800W or 400W) for powering PoE-enabled devices Supports SNMP v1/v2c/v3, Access Control List (ACL), QoS, 802.1Q VLAN, IPv4/IPv6, port trunking, port mirroring, IGMP v1/v2/v3 snooping, etc. Supports 56 Gbps backplane bandwidth, 41.6 Mbps forwarding speed, 8K MAC address table and 9KB jumbo frames