Brother MFC-3240C - Manual (Page 157)

USING YOUR MACHINE WITH A MACINTOSH ® 8 - 35
File
Scan to File button allows you to scan an image and save it in a
specific file type to any directory on your hard disk. This allows you
to easily archive your paper documents. To configure the file type
and save to directory, click on the button while holding down the Ctrl
key and select Software Button.
Select the file type for the saved image by selecting from the File
Type pull down list. You can save the file to the default Pictures
folder, or you can select another folder/directory by clicking the
Browse button.
For the supported file types, please refer to the File attachments
on page 8-34.