18-Port Layer 2 Web Managed Rackmount Switch. 16-Port 10 100TX RJ45 802.3at PoE ports 2-Port Gigabit TP SFP Combo Web Smart Ethernet Switch. Ports 17-18 are shared and can be either Gigabit RJ45 Ports or SFP Slots to add SFP modules. Ports 1-16 support up to 30w PoE per port with a total power budget up to 220W. Siwtch fabric 7.2Gbps non-blocking, Throughput 5.35Mpps@64Bytes. Dimension 440 x 200 x 44.5 mm, 1U height.