48-port Pure-Gigabit Smart Switch, 48 10/100/1000Mbps RJ45 ports including 4gigabit SFP slots, Tag-based VLAN, STP/RSTP/MSTP, IGMP V1/V2/V3 Snooping, 802.1P QoS, Rate Limiting, Port Trunking, Port Mirroring, SNMP, RMON, rack-mountable