48-port Gigabit Smart Switch TP-LINK "T1600G-52TS", 4 SFP Gigabyte Slots Gigabit Ethernet connections on all ports provide full speed of data transferring L2+ Feature——Static Routing, helps route internal traffic for more efficient use of network resources Integrated security strategy including 802.1Q VLAN, Port Security and Storm control help protect LAN area investment L2/L3/L4 QoS and IGMP snooping optimize voice and video applications IPv6 support with dual IPv4/IPv6 stack, MLD snooping, IPv6 neighbor discovery WEB/CLI managed modes, SNMP, RMON and Dual Image bring abundant management features