Digi CM 16. Management protocols: HTTP/HTTPS, SNMP. Authentication method: TACACS+, RADIUS, LDAP, Kerberos, Security algorithms supported: SSH, SSL/TLS. Console port: RJ-45. Operating system provided: Linux Kernel 2.6. Dimensions (WxDxH): 216 x 432 x 45 mm, Weight: 2600 g