all usb 3.0 HDD are compatible with 2.0. You can always go with WD passport or WD elements...these external HDD have served me well from 2013 although currently I'm using a Seagate external HDD and so far so goodDo you think that is the only way. Can we use external hard disk as internal one?? If yes, then please tell how. Also I would trouble you for best hard disk of USB 2.0 because I have USB 2.0 port installed.
Thanks for help