Product Detail Internal cooling fan provides continuous airflow for the printhead— maximizing throughput productivity for long, unattended print jobs Additional feed rollers provide precise forms handling and printed-character placement accuracy 3-piece top cover provides easy access and unsurpassed break resistance Prints 475 copies per second in Utility/Draft mode and 105 copies per second in Letter-quality Compatible with Windows XP, 2000, 98/95, 3.x and NT 4.0; MS-DOS . The "Okidata ML490 24-PIN IMPACT PRINTER" is best product for you. We recommended Okidata ML490 24-PIN IMPACT PRINTER