How do I configure the fax settings on the HP LaserJet Pro MFP M127?

Configuring the fax time, date, and header settings is required before using the fax feature. On an LCD control panel, press Setup, select System Setup > Time/Date, enter the time and date, then go to Fax Setup > Fax Header and enter your fax number (up to 20 characters) and company name (up to 40 characters). Alternatively, Windows users can use the HP Fax Setup Wizard by clicking Start > Programs > HP > Fax Setup Wizard. (Page 10)