Logitech Extender Box For SMART DOCKConnect the Logitech SmartDock Expansion Box to your Logitech SmartDock (not included) and not only enjoy a 15 foot extension, but the expansion box also provides support for the GROUP video conferencing system from Logitech. The expansion box has connections for two HDMI input output streams, one group pass, one pass through power and two Ethernet ports. The included 15 foot long cable provides a connection for power, HDMI, USB and LAN, allowing for