D-Link 52-Port Gigabit Web Smart Switch including 4 SFP ports

D-Link 52-Port Gigabit Web Smart Switch including 4 SFP ports Format: Rack-mountable Desktop Standards: IEEE 802.3 10BASE-T Ethernet IEEE 802.3u 100BASE-TX (Fast Ethernet) IEEE 802.3ab 1000BASE-T (Gigabit Ethernet) IEEE 802.3x Flow Control for Full-Duplex Mode Primary Ports: 48 x RJ45 + 4 x SFP Primary Port Speed: 10/100/1000Base-T MAC Address Table: 16K Uplink Speed: 10/100/1000 Mbps Buffer Memory: 3.0 MB Protocols: TCP/IP