Installing Epson XP-520/XP-620 Driver on Mac OS X 10.12 Sierra The Mac Post Shows You How-to Download and Install the Epson XP-520/XP-620 Series Printers Drivers on Mac OS X 10.12 Sierra Unix/BSD Desktop. You dispose of Two Ways for Installing the Epson XP-520/XP-620 Series Printer Driver on Mac OS X 10.12: Checking for Software Updates […]