JetStream™ L2+ 48-port Pure-Gigabit Smart Switch, 48 10/100/1000Mbps RJ45 ports including 4gigabit SFP slots, Static Routing, Tag-based VLAN, STP/RSTP/MSTP, IGMP V1/V2/V3 Snooping, DHCP Filtering, 802.1P QoS, Rate Limiting, Voice VLAN, Port Trunking, LACP, Port Mirroring, SNMP, RMON, 1U 19-inch rack-mountable steel case