I Would give my mom and dad usb external hard drives and a compact usb hub. This is because they have lots of data but only have 2 Sara ports in their computer. This means they are always fiddling around with the case open, waring down cables.
Link:
http://www.amazon.co.uk/gp/aw/d/B00FZU9JYI/ref=mp_s_a_1_1?qid=1449784178&sr=8-1π=SY200_QL40&keywords=external+hard+drive+2tb&dpPl=1&dpID=41jNVFTHmxL&ref=plSrch