8 Ports Industrial Full Gigabit Managed Switch UTP7308GE Datasheet Manual Firmware ADVANTAGESBroadcom chip; Buffer reaches 4Mbit, Support 4K high-definition video transmission.Support Web-based network management, support VLAN, QoS, Fast Ring, RSTP, SNMP etc. network function.6KV surge immunity, industrious class-4 protection and anti- interference ability.Redundant power source.Relay alarm: Support power no-input,Ethernet link off, PoE link off alarm by relay turn over.Support -40℃~+75℃ wide range temperature