Sometimes the solution can be very simple. The file transfer problem could be caused by a port issue on your computer. Try connecting the external drive to a different USB port. Check if the CD or DVD ...

USB debugging is among the advanced Android features hidden in the Developer Options menu. When enabled, this feature will allow an Android phone to communicate with a computer over a USB connection.

One of the widely used hidden features from the Developer Options menu is USB debugging. When enabled, USB debugging allows you to connect and transfer data between your Android phone and a computer.