I.R.I.S. Readiris 14 for Windows User Guide - Manual (Page 57)

Section 6: Scanning and Opening Documents
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The Scanner window is displayed.
Below you find an overview of all available scanner settings.
Scanner model
Click Scanner Model to select your scanner profile from the list.
The scanner profile allows you to access features specific to your
scanner. For example, duplex scanning (ADF). Settings that are
unavailable for your scanner are not displayed or greyed out.
Do not worry if you don't see your scanner in the list; not all
scanners have specific scanner profiles.