I think this external device is only for basic uaers not for experianced users.
Writing speed is very poor less then 50 mbps is not a good speed. I think min 80 to 100 mbps write speed is good quality of hard disk. Its just ok subject not good. Anyways if you want to get that product plz get the details on internet and user review I the wd elements and sony’s product is good. And only get in 4500 to 5000. Thank you