Add a gigabit ethernet rj45 port and hdmi output to your port limited laptop through a single usb 30 port the usb31gehd usb 30 mini docking station adapter lets you add gigabit ethernet and hdmi connection ports to your ultrabook laptop or desktop through a single usb 30 host giving you two connectivity ports that arent always available on modern mobile computers providing full gigabit bandwidth for faster network connections this adapter leverages the 5 gbps capabilities of the us