The Lexmark T644 provides outstanding value with a standard 514 MHz processor and 600-sheet input. With its optional wireless security-minded options and special applications and paper handling features the Lexmark T644 is easily adapted to a workgroup needs. Its print speed of up to 50 ppm on letter-size paper a time to first page as fast as 8.5 seconds and 250000-page duty cycle make this a great workgroup solution.PrinterPrinter Type : Workgroup Printer Technology : Laser Printer Interface : USB 2.0; Parallel First Page Out : 8.5 seconds Printer Output : Monochrome Printer / Max Resolution ( B&W ) : 1200 x 1200 dpi PostScript Support : Standard Printer Language Simulation : PDF 1.5; PCL 6 emulation; PostScript 3 emulation; Personal Printer Data Stream Duty Cycle : 250000 one-time maximum Impressions per month Processor Clock Speed : 514 MHz RAM Max Supported Size : 640 MB MediaPrinter / Media Type : Envelopes; Card Stock; Plain paper; Paper Labels; vinyl labels; Transparencies; Dual web labels; Polyester labels; Integrated Labels Printer Media Size (Standard) : Envelope 10 / 7.75 / 9 / B5 / C5 / DL A4 A5 Executive Folio JIS-B5 Legal Letter Statement Dimensions&MiscellaneousWidth : 17.2 Inch Depth : 20.6 Inch Height : 16 Inch Header / Model : T644 2400 Image Quality Memory Standard: 128 MB NetworkingSystem RequirementsSystem Requirements / OS Required : Apple Mac OS X/9.xCitrix MetaFrameLinux Microsoft Windows 2000 (Pro/Server/Advanced Server)/ NT (4.00/4.00 Server)/Me/ XP (Home Pro)/Server 2003 (Standard Enterprise)/98 SE/XP Pro x64/Terminal ServicesNovell NetWareOS/400UNIX 
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