Add a gigabit ethernet port to your macbook chromebook or tablet gain fast reliable network access for your macbook chromebook or tablet even if it doesnt have an ethernet port this usb 30 to gigabit network adapter adds a single rj45 ethernet port to your computer through your usb 30 port it installs instantly with no driver required engineered with a quality aluminum housing in a silver finish the network adapter is the perfect companion for your macbook chromebook or tablet