Teltonika TRB255. Product colour: Grey, LED indicators: Power, Safety: CE: EN 62368-1:2014 + A11:2017, EN 62311:2008. Management protocols: SNMP, Supported network protocols: TCP, UDP, IPv4, IPv6, ICMP, NTP, DNS, HTTP, HTTPS, SFTP, FTP, SMTP, SSL/TLS, ARP, VRRP, PPP,.... Ethernet LAN data rates: 10,100 Mbit/s, Networking standards: IEEE 802.3, IEEE 802.3az, IEEE 802.3u. Authentication method: Pre-shared key, digital certificates, X.509 certificates. Serial interface type: RS-232/485