JetStream 48-port Pure-Gigabit L2 Managed Switch, 48 10/100/1000Mbps RJ45 ports including 4 Gigabit SFP slots, Static Routing, Port/Tag/Voice/Protocol-Based VLAN, Q-in-Q(Double VLAN), GVRP, STP/RSTP/MSTP, IGMP V1/V2/V3 Snooping, COS, DSCP, Rate Limiting,