I'm not sure this is the answer you're looking for, but can't you simply open
Windows Explorer, choose the files to be copied to your flashdrive and drag
them to the flashdrive? I often drag entire folders with hundreds of files
back and forth between my flashdrive and hard drives on several machines.

"REB" wrote:

How can I send more than 3 at a time files to save on my flashdrive. I only
know how to save one at a time. Thanks.