Leviton 47611-GT4 10/100Mbps 4-Port Internet Gateway Connects to a Category 5e Voice and Data Module with Category 5 or Category 5e patch cords Cascade additional switches or hubs from any LAN port with auto-detect uplink, designed for up to 253 connections UPnP (universal plug-and-play) allows automatic discovery and configuration of the Gateway Built-in NAT firewall protects networks from outside observation and provides secure communication for network users Customizes web access and filters unwanted sites with URL blocking feature