Lantronix SecureLinx SLC16. Management protocols: SNMP v1/2/3. Authentication method: RADIUS, TACACS+, LDAP, ActiveDirectoryNIS, Kerberos, Security algorithms supported: SSH, SSL/TLS, 802.1x RADIUS. Console port: RS-232. Dimensions (WxDxH): 438 x 305 x 44 mm, Weight: 4.53592 kg. AC input voltage: 100 - 240 V