Hi, I got a surface pro 4 with surface dock, also tried with a usb hub too. When I transfer multiple files from 1 hardisk to another hardisk, and leave it aside to do other things, when I am back, the window folder and transfer window are all close. Transfer are broken. I have disabled the usb selective suspend setting and turn off hardisk to never for the power option. This issue is still occurring. Is it some other setting issue or issue with my surface pro 4.