Xerox Productivity Kit (includes 160 GB Hard Drive, Secure Print, Saved Print, HD Collation, Font/Form/Macro Storage, Security Certificate Storage), Phaser 6600, WorkCentre 6605The Xerox Productivity Kit is a powerful upgrade designed to turbocharge your Phaser 6600 and WorkCentre 6605 laser printers. By adding a robust 160 GB hard drive and a suite of workflow enhancing features, this kit delivers faster print times, stronger document security, and streamlined asset management. Built for high demand environments, it optimizes routine tasks, reduces bottlenecks, and helps teams maintain branding consistency across every job.