24-Ports 10/100/1000 UTP + 4-SFP Slots 100/1000 Web Based Management, SNMP IGMP Snooping Port Mirroring 802.3ad Link Aggregation Control Protocol (LACP)
802.3af Power Over Ethernet, 15.4Watt Gigabit S-Ring (Recovery Time < 50ms) Wide operating temperature : -40~80℃ Serial Port (RS232C to Ethernet) Power redundant (DC 48V) Alarm Relay