Digi Passport 48 Dual AC Power . Management protocols: HTTP/HTTPS, SNMPv3, PPP, RIP. Authentication method: RADIUS, TACACS+, Secure LDAP, Active Directory, Kerberos, Security algorithms supported: SSH. Console port: RJ-45. Operating system installed: Linux Kernel 2.6.12. Dimensions (WxDxH): 253 x 443 x 44 mm, Weight: 3.05 kg