Wd elements hdd product look like great nice design or portable facility good.i bought this prodact 1 year 7 mounth.i randamly used this product but service is good but once upon in a day this product put in my desktop and 2 movies copy to my wd hdd, unfortunate half coppied or cancel this operation automaticly.or restart my computer automatic or before my computer homescreen many many word show me that I dont understand this, or show me disk check option runing with black screen.desktop no switch working this time.randamly run disk check.i scared or detouch my desktop to hdd or computer is normal.my computer have quick heal original sequrity, i check this virus in my computer but no virus found or no couruption file detected, so I confermed this product fault.wd elements just looks great perfomance very poor dont buy it please other product buying same priced so, u happy.bye.