How to copy files from your desktop to a USB using command line interface

• Let's say you have a whole lot of mp3 files from your desktop and want to copy them to your USB without selecting them from a list of file formats or by any chance wanting to be accurate.You can only choose to select only music files from many files.
• Lets assume your usb is drive H: this is how you would do it,type copy .\desktop\*.mp3  h:\