The usb 30 to gigabit ethernet adapter ue300 adds gigabit ethernet network connectivity to your ultrabook macbook air or desktop through a usb 30 port backward compatible with usb 2011 standards transferring files at ultrafast speed over an ethernet port high speed data transfer equipped with usb 30 ports and gigabit ethernet port ue300 provides a high speed data transfer rate connect to gigabit ethernet network ue300 adds your devices connectivity to gigabit ethernet network com