Microsoft SyncToy
A nice little free tool from Microsoft that lets you synchronise data between your computer and a USB pen drive (actually, it will work between other directories too).
The most recent version I can find is SyncToy v2.0 which can be downloaded here.
The silent install for SyncToy is:
SyncToySetup.msi /passive /norestart
(This article is part of a series about the build disc I use to standardise system builds. The series starts here and this particular article follows on from this one.)

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