So far works pretty good. USB 2 works as you would expect. USB 3 does not perform as fast as it does if i plug the device straight into the port on the pc (it's still faster than usb 2). Windows 7 make sure you have the usb 3 drivers installed and use the power plug. Charging port work good. It will not fast charge my lumia phone, but it will charge it even with pc turned off.