Fujitsu ScanSnap S510M Operator's Manual page 40

ATTENTION
⇒
The "Startup item registration" window appears before the installation is complete.
⇒
Clicking the [OK] button in the "Startup item registration" window closes the window.
Even if you do nothing, the window closes automatically in ten seconds.
18
With Mac OS X v10.3, v10.4, and v10.5, a window may appear requiring
you to authenticate the action. In this case, enter the password of the
user with Administrator rights.