For fast wired connections, there are either five (DGS-105) or eight (DGS-108) gigabit LAN ports. Convenient plug-and-play installation Cable diagnostics uses diagnostic tools to inform users of cable conditions. LEDs For bandwidth-intensive applications like IPTV, L2 multicast features like IGMP snooping optimize multicast data streams. Durable metal enclosure lowers a port's power when no link is found. detects the length of the connected cable and modifies the power on a port. RoHS compliant and Energy Star compliant