The OKI MICROLINE 420 9-pin printer and its wide-carriage counterpart ML421 are a quantum leap forward in impact printer performance. Engineered for dedicated forms printing in the most demanding point-of-sale automation and utility environments ML420/421 printers are right at home in applications such as retail sales counters medical facilities automotive rental and repair shops airline counters financial departments and manufacturing sites.PrinterPrinter Type :  Personal Printer Technology :  Dot-matrix Printer Interface :  USB; Serial; Parallel Printer Form Factor :  Desktop Printer Speed :  570 cps(Super Draft) 510 cps(Fast Draft) 380 cps(Utility) 95 cps(Near Letter) Printer Output :  Monochrome Printer / Max Resolution ( B&W ) :  240 dpi x 216 dpi Duplex Printout :  N/A Printer Language Simulation :  EPSON FX; IBM ProPrinter; Okidata Microline Duty Cycle :  24000 pages per month RAM Installed Size :  N/A PC Compatibility :  PC MediaPrinter / Media Type :  Labels; Envelopes; Cut sheets; Index cards; Continuous forms Dimensions&MiscellaneousWidth :  15.70 Inch Depth :  13.60 Inch Height :  6.00 Inch Header / Model :  Microline 420 Features :  Printhead: 9 pin NetworkingInterfaces & Connections :  1 x serial - RS-232 - 25 pin D-Sub (DB-25) System RequirementsSystem Requirements / OS Required :  Microsoft Windows XP / 2000 / 98 / 95 / 3.x / NT 4.0 MS-DOS Power / BatteryVoltage Required :  AC 120 V 50 / 60 Hz Service&SupportService & Support Type :  3-year standard warranty parts and labor 2-year printhead Green Product Informat