My first reaction would be - - - cost !! lol
You guys are right it's not from reputable brand like Kingston etc.
probably best to stick to a external desktop hardrive
http://www.amazon.co.uk/gp/product/..._rd_t=36701&pf_rd_p=577048787&pf_rd_i=desktophttp://www.amazon.co.uk/WD-Passport-...tb+my+passport
i use a 2tb one on my zgemma USB powered with no issues i have a spare i can do for £50