Five (DGS-105) or eight (DGS-108) Gigabit LAN ports for high-speed wired connections Plug-and-play installation for convenience Cable diagnostics notifies users of cable conditions through diagnostic LEDs L2 multicast functions including IGMP snooping optimize multicast data streams for bandwidth intensive applications like IPTV. Rugged metal housing Reduces power on a port when no link is detected Adjusts power on a port by detecting the length of the connected cable Energy Star compliant RoHS compliant