1-Port RS-232/422/485 Secure Device Server, 12-48V, w/ adapter Configuration Options Web Console (HTTP/HTTPS), Serial Console, Telnet/SSH Console, Windows Utility Management ARP, BOOTP, DHCP Client, DNS, HTTP, ICMP, IPv4/IPv6, PPPOE, SMTP, SNMPv1/v2c/v3, SNTP, TCP/IP, Telnet, UDP