I must say the wd done a fabulas job . As I expected. The speed of transfering is upto 90mbps. So I dont have to say it is a good performer.also you dont get 19mbps below speed ever unless you use it for multipurpose. The desing of wd is good enought .and I think the hardware is also good. The one thing inspire to buy another is its spportiveness. Where good pendrive not support all laptops wd support every hardware not mobile with otg.the lead quality is also good and work on that point when I hang it.also their trust is above every thing.