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 equipped with usb 30 ports and gigabit ethernet port ue300 provides a high speed data transfer rate ue300 adds your devices connectivity to gigabit ethernet network compact design with a retractable cable makes it an ideal on the go ue300 can be