Brother MFC-3100C - Manual (Page 132)

14 - 15 U S I N G T H E W I N D O W S ® - B A S E D B R O T H E R M F L - P R O C O N T R O L C E N T E R
BHLMFC-US-MFC3100C-FM5.5
FAX Settings
Brother MFL Pro Fax
FAX Resolution—Fine (200 × 200)
To change the fax options, click the FAX Options… button.
Click the OK button when you are ready to save your FAX settings.
The MFL Pro Fax on COM1 Properties screen appears:
Select the Paper Size and Orientation (Portrait or Landscape) and click OK.
To return to the factory default settings, click the Restore Defaults button.