Use these free software to create an exact copy of bootable flash USB drive or Clone one USB drive to another USB. Useful to create multiple copies.

To copy files from the USB memory stick, select your files and drag them to your desktop or, for better organization, a folder in Windows Explorer (or Finder on Mac).

Copy Music to Your Android Phone Over USB Android: The Simple Help tech blog walks through the process of adding music to your Android-based phone using a USB cable and some simple file copy action.