Two RJ-45 10/100-Mbit Ethernet connectors are labeled PRI (LAN1) for primary, and SEC (LAN2) for secondary. Use a standard Ethernet patch cable to an Ethernet switch.
The factory-default IP address for PRI is 192.168.1.149. The default subnet mask is 255.255.255.0. By default, the SEC (LAN2) port is disabled.