Brother MFC-3240C - Manual (Page 166)

8 - 44 USING YOUR MACHINE WITH A MACINTOSH ®
Quick-Dial (not available for MFC-210C)
The Quick-Dial button allows you to open the Set Quick-Dial
window of the Remote Setup Program, so you can easily register or
change the dial numbers from your computer.
Ink Level
The Ink Level button opens the Remote Setup Program’s
Maintenance window, which displays the ink level for each cartridge.