Lexmark MX710
For Windows users
With a document open, click File > Print.
Select the printer, and then click Properties, Preferences, Options, or Setup.
Click Fax > Enable fax, and then enter the recipient fax number or numbers.
If necessary, configure other fax settings.
Apply the changes, and then send the fax job.
Notes:
For Macintosh users
With a document open, choose File > Print.
Select the printer.
Enter the recipient fax number, and then configure other fax settings, if necessary.
Send the fax job.
Here are the easy steps of sending documents from a computer to a connected printer.
Unable to Send a Fax Cover Page from the Computer