TP-Link TL-SL2218, (18)Port Layer 2 Managed Desktop Rackmount Switch. (16)10 100Mbps RJ45 Ports port 17-18 can be either (2)1000Mbps Gigabit RJ45 Ports or Gigabit SFP Slots, Advanced QoS features, Layer 2 features, Enterprise Level Management Features, WEB CLI managed modes, SNMP, RMON bring abundant management features. Rackmount kit included. SFP modules sold seperate.