Laserjet (monochrome)

Printers with factory-installed options have different model-numbers to denote the different options included and to differentiate a specific model from others in its series. These suffixes include:

• D for a duplexer, a device which enables fully automatic, hands-free double-sided printing.
• T for an additional paper-tray (enables two different paper types to be kept available, or in certain models, to load paper while the printer is printing).
• S for a Paper Stacker, a device which increases the output bin capacity.
• N for built-in JetDirect (network) card
• W for built-in wireless network card
• H for High-capacity (heavy-duty model, sometimes combined with M to indicate Heavy Media)
• L for Light (only 1 paper tray)
• P for Personal, ment for "personal or small workgroup" use (laserjet 4 and up), or PostScript support (laserjet II and III only, see M)
• ph+ for Paper handling (eg. Stapler-stacker), or S/SL for stapler/stacker.
• M for Macintosh (PostScript module present)
• X for combination duplexing, networkable printer with additional tray. Replaced the DTN suffix.

Example: A LaserJet 4000DTN would come with a duplexer and a built in JetDirect card, as well as an extra paper tray.