The Xerox Phaser 6140N PS Windows driver is the printer driver software designed specifically for the Xerox Phaser 6140N color laser printer. The "PS" in the name refers to PostScript support, which is a page description language used for printing. The Xerox Phaser 6140N is capable of handling both PostScript and PCL (Printer Command Language), but the PostScript (PS) driver is particularly useful for high-quality printing, especially in environments where detailed graphics or complex documents are printed.