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The Lexmark T644 is a higher-end monochrome laser printer aimed at demanding corporate users.

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Comes through on 50ppm rating, consistently speedy high-volume print jobs

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Can use prior versions of Lexmark drivers, eliminating need to install if an old printer was Lexmark

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Prints within seconds if printer is warmed up

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Very crisp print quality, better than average for the speed at which it prints

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Intuitive user interface on the printer's LCD helps set up jobs and report errors

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  • Only 3 words are allowed.

Toner cartridges have slightly shorter life than previous Lexmark models of this type

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Can take up to 30 seconds to print a page if not already warmed up

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  • Only 3 words are allowed.


The Lexmark T644 is a higher-end monochrome laser printer aimed at demanding corporate users. Unlike in Lexmark's newest models, built-in network and duplex printing are optional. Compared to the T642, the T644 boasts a more powerful 514MHz processor, enabling a higher print speed of up to 50 ppm, with a time-to-first-page of 8.5 seconds, and greater standard memory of 128 MB. The RAM can be expanded to 640 MB, while the 6,000-page cartridge can be replaced with a 21,000-page high yield or 32,000-page extra high yield version; the multipurpose feeder and input tray can also be expanded in multiple ways. Like the T640 and T642, the T644 supports a number of security protocols and enables confidential printing as each person in an office can be assigned a 10-digit PIN which must be entered before a document prints. Other features include a USB port that allows PDF documents to be printed from a flash drive.

  • Monochrome laser printing
  • 457MHz processor
  • 64 MB standard memory (expandable to 576 MB)
  • 4-line monochrome LCD display
  • 10-key PIN entry pad
  • USB port
  • Text print speeds up to 45 ppm
  • 8.5 seconds to first page
  • Optional wired/wireless networking
  • Optional duplexer
  • 500-sheet input tray, expandable
  • 100-sheet multipurpose feeder, expandable
  • 6,000-page toner cartridge, expandable
  • Print resolution up to 1200 x 1200 dpi
  • Mac, Linux, and PC support
  • Print noise level: 55 dBA
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