Ports   50 x 10/100/1000 + 2 x combo Gigabit SFP  Power Supply AC 120/230 V ( 50/60 Hz )  Others Maximum data transfer rate 1 Gbit/s     Supported data transfer rates 10/100/1000 Mbps     Switching capacity - Gbit/s     MAC address table 8000 entries     Data transmission Ethernet, Fast Ethernet, Gigabit Ethernet     Management protocols SNMP 1, SNMP 2, RMON 1, RMON 2, RMON 3, RMON 9, Telnet, SNMP 3, HTTP, HTTPS     Copper ethernet cabling technology 10BASE-T,100BASE-TX,1000BASE-T     Expansion slots 4 ( 4 ) x SFP (mini-GBIC)     Authentication method Secure Shell (SSH), RADIUS     Dimensions (WxDxH) 430 x 350 x 44 mm     Weight 3900 g