... 2 Management port 1 x RS232 console Power AC 110V - 240V 50-60Hz Maximum power consumption 130W for device Operating temperature ... , ARP binding, Gratuitous ARP, ARP limit Support DCHP Client, Relay, Snooping, Option 82 DHCP Server for IPv4 and IPv6 DHCP ... MSTP(802.1s) Support VRRP, LACP load balance Redundant power supply, power load balancing Support Firmware & Configure dual fault tolerance backup ...