lets get practical i needed a hard disk just to store my data which is around 400 gigs i usually use my laptop at home only so i did not care for metal or some strong plastic casingpros1 it seems quite of a nice build quality2 the look is very simple plain black3i dont have a usb 30 port so i cant tell you the exact usb 30 speeds but yeah i get around 3035 mbps constant write speed on usb 20 you can watch videos on youtube if you want to know the real life 30 speeds