Edimax usb 2030 fastgigabit ethernet adaptors edimax eu 4208 this usb 20 fast ethernet adaptor from edimax is created specifically to for an ultrabook or computer without an ethernet port plug the fast ethernet adaptor into a usb 20 port of your ultrabook and get instant access to a robust 10100 mbits internet connection the eu 4208 also provides a quick and convenient way to add a desktop computer and ethernet connection without having to fuss around with opening the computer case