Network Broadcast Storm ProtectionSupports 4*10/100/1000Tx Gigabit Ports + 4*100/1000Fx SFP SlotsIEEE 802.3af/at Compliant up to 30 Watts per PortNetwork Redundancy Support: RSTP/MSTP, and G.8032 ERPS (Recovery time <50ms)Configuration: Web Console, Serial, CLI CommandSupports IGMP v1/v2Supports QoS (IEEE 802.1p) and CoS/ToSSupports IEEE 802.1Q VLAN, SNMP v1/v2c/v3Redundant Power Input Design 48~55VDC + Built-in Relay Output for Port Break AlarmSystem Warning Setting for Automatic Warning through E-mailDIN-Rail and Wall Mount SupportOperating Temperature Range - STD: -10° to 70° C5-Year Warranty