Cisco Security MARS 20R. Management protocols: SSH, SNMP, Telnet, Data link protocols: Ethernet, Fast Ethernet, Gigabit Ethernet. Authentication method: IEEE 802.1x. Cabling technology: 10Base-T/100Base-TX/1000Base-T. Power requirements: AC 120/240 V ( 50/60 Hz ). Certification: UL, VCCI, CE, FCC part 15