Each ETH LAN port is a standard RJ-45 network port. Use ETH LAN to connect a data device to the switch through a 10/100/1000 Mbps Ethernet port. You can connect an external LAN to ETH LAN.
Note:
For G430 v3, use Shielded Twisted Pair (STP) type CAT5e cables to connect to the jacks labeled "ETH WAN" or "ETH LAN" in countries that require EN55022/EN55032 compliance.