The edimax eu 4208 is a compact usb fast ethernet adapter for an ultrabook or macbook air with no ethernet ports or for desktop and notebooks that need an additional fast ethernet port itrsquos an ideal portable accessory or replacement network adapter and with full 10100mbps fast ethernet usb 20 performance itrsquos faster than most wireless connections connect to a 10100mbps network from a usb enabled desktop or notebook save costs and replace an old or broken internal network card or use