Cost-effective All-in-One cartridges reduce maintenance requirements and ensure continuous high quality output. Simply replace the compact cartridge - containing toner, drum and cleaning units. The printer has 128MB standard memory, expandable up to 384MB. A 20GB hard disk drive is available for demanding workgroups handling substantial network printing and large print files. A maximum paper capacity of 850 sheets handles the work of the busiest print environments. This consists of a 250-sheet cassette and 100-sheet multi-purpose tray as standard - plus an optional 500-sheet cassette. Print on a range of sizes up to A4. The 6000 dn is Windows compatible. It also offers support for English versions of Mac and Linux, distributed via the web.