So I've just bought a new MacBook Pro retina but I realised there were two thunderbolt ports I'll never use. Now I need a external drive and was thinking of getting the Lacie rugged usb 3 /thunderbolt 1tb drive. First if I'm right on a hard drive thunderbolt will make hardly any difference to usb 3 in terms of speed. So I looked onto the new dual drive by WD with thunderbolt but yet again it's a hard drive so I might aswell buy a cheap usb 3 1tb drive instead . So I sort of have 2 questions: What other uses if any are there for thunderbolt aside from displays and storage? Are there any good cheap thunderbolt hard drives out there which make a difference when compared to usb 3?