Ports   48 x 10/100 + 2 x combo Gigabit SFP + 2 x 10/100/1000  Power Supply AC 120/230 V ( 50/60 Hz )  Others Maximum data transfer rate 0.1 Gbit/s     Supported data transfer rates 10/100 Mbps     Switching capacity - Gbit/s     MAC address table 8000 entries     Management protocols SNMP 1, SNMP 2, RMON, Telnet, SNMP 3, HTTP, HTTPS     Data link protocol Ethernet, Fast Ethernet     Ports quantity 48     Cabling technology 10BASE-T, 100BASE-TX     Data transmission Wired     Ethernet LAN (RJ-45) ports quantity 52     Authentication method Secure Shell (SSH), RADIUS     Dimensions W x D x H 430 x 350 x 44 mm