Just to note, although some USB drives come with software it is not often very useful. As a general rule from my personal experience the only software that is commonly pre-installed on USB drives is encryption software for securing files placed on them in some sort of "vault". In most cases it appears best to just delete all the files that came preinstalled on a USB as there are better encryption solutions available if that is the sort of software a user wants, and in the rare cases where a USB comes with other types of programs on it there are alos usually better solutions for the purposes they might fulfil.
To ask for more details on the issue you are asking about here, this software you are hoping to find, if it finds a duplicate file (something already on the USB but also in the documents folder) what would you wish it to do? Write over the USB copy with a copy from the PC( a bad idea incase the version on the pc had been corrupted since the stick was last inserted), Write the new copy alongside the one already there (which eats up space somewhat), Do nothing and leave the one on the USb as it is and not copy the new one to the USB either?
One other thought, there might be some utilities within windows (some versions of it) which already do this if you activate them, perhaps under the "file recovery" section in control panel.
Edited by rp88, 21 January 2015 - 05:26 PM.
Back on this site, for a while anyway, been so busy the last year.
My systems:2 laptops, intel i3 processors, windows 8.1 installed on the hard-drive and linux mint 17.3 MATE installed to USB