JetStream™ 28-port Pure-Gigabit L2+ Smart Switch, 24 10/100/1000Mbps RJ45 ports including 4 Fixed Gigabit 10G SFP+ Slots. Basic L3 routing protocols including Static Routing, True Physical Stacking up to 6 units, Port/Tag/Voice/Protocol-Based VLAN, GVRP, STP/RSTP/MSTP, IGMP V1/V2/V3 Snooping, COS, DSCP, Rate Limiting, 802.1x, IEEE 802.3ad, L2/3/4 ACL, Port  Mirroring, IP Source Guard, SSL, SSH, CLI, SNMP, RMON, 1U 19-inch rack-mountable steel case