JetStream" 12-port Pure-Gigabit L2 Managed Switch, 12 Gigabit SFP slots including 4 Combo Gigabit RJ45 ports, 128 Static Routing rules, Port/Tag/Voice/MAC/Protocol-Based VLAN, Q-in-Q(Double VLAN), GVRP, MVR, STP/RSTP/MSTP, IGMP V1/V2/V3 Snooping, COS, DSC