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Rectangular grey office printer with flatbed scanner lid and paper tray visible

Lexmark

Lexmark MX331ADN 4-in-1 Monochrome Laser Printer 40 ppm

SKU CH-19Z0-9MG2B MPN MX331ADN

4-in-1 monochrome laser prints, copies, scans and faxes at 40 ppm with automatic duplex and 350-sheet input

  • Power draw0.1 W (Hibernate Mode) 0.8 W (Sleep Mode) 530 W (Printing)
  • Best suited forMFC / All-In-One
  • Main functions4-in-1: Print, Copy, Scan & Fax
  • Printing typeMonochrome
  • Print technologyLaser
  • Monochrome print speedUp to 40 ppm
  • 4-in-1 print, copy, scan and fax handles every office task
  • Up to 40 ppm black output keeps workflows moving fast
  • 2 second first page out reduces waiting time
  • Automatic duplex printing cuts paper use in half
  • 350-sheet standard tray supports high-volume jobs

4-in-1 Monochrome Laser for Small Offices

The Lexmark MX331ADN combines print, copy, scan and fax in one desktop unit. It produces monochrome output at up to 40 ppm with a 6.2-second first-page time. A 50,000-page monthly duty cycle supports regular department workloads. Standard 512 MB memory handles multi-page jobs without slowing the queue.

USB and Ethernet Setup with Driver Selection

Connect by USB or 10/100BaseTX Ethernet using the RJ-45 port. Install the PCL 6 or PostScript 3 emulation driver that matches your operating system; using the wrong emulation can cause garbled text or missing pages. The 350-sheet standard tray loads from the front, so allow clearance in front of the device. Duplex printing is built in and requires no extra hardware.

Check Network Ports and Paper Sizes Before Ordering

Verify your router or switch has an available 10/100 Ethernet port if you plan wired networking. The scanner bed accepts documents up to 8.5 by 14 inches; larger originals must be fed through the ADF or copied in sections. Fax operates at 33.6 Kbps over an analogue phone line, so a digital PBX extension will not work without an adapter. Media support covers plain paper, labels, card stock and envelopes up to the stated capacities.

How it compares

Measured against everything we stock in Monochrome & Color Laser Printers, at today’s prices. Recalculated every night.

Price $372.99
Cheaper than about 64% of the 2,183 comparable items (median $485.99).

Specifications

Product
Brand nameLexmark
Model nameMX331ADN
Main functions4-in-1: Print, Copy, Scan & Fax
Printing typeMonochrome
Print technologyLaser
Performance
Monochrome print speedUp to 40 ppm
Monochrome print resolution600 × 600 dpi
First page out time6.2 seconds
Two-sided printingYes
Monthly duty cycleUp to 50,000 pages monthly
Monochrome copy speedUp to 40 cpm
Fax transmission speed< 3 seconds per page
Modem speedITU T.30, V.34 Half-Duplex, 33.6 kbit/s
Maximum paper output150 pages 20 lb or 75 gsm bond
Processor
CPU clock speedDual Core, 1.0 GHz
Memory
Standard memory512 MB
Maximum memory512 MB
Storage
Scan resolution, optical600 × 600 dpi
Connectivity
Connection interfaceEthernet (RJ-45) / USB
Ports & slots
USB connectionsUSB Compatible with USB 2.0 Specification (Type B)
Network interfaceEthernet 10/100BaseTX (RJ-45)
Power
Power draw0.1 W (Hibernate Mode)
0.8 W (Sleep Mode)
530 W (Printing)
Size & build
Product dimensions13.3 in × 16.2 in × 14.4 in
Product weight28.2 lb (12.8 kg)
Shipping weight14.70 kg
Package size465 × 420 × 385 mm
Compatibility
Accepted media sizesA6, Oficio, 7 3/4 Envelope, 9 Envelope, JIS-B5, A4, Legal, A5, Letter, Statement, Executive, Universal, DL Envelope, Folio, 10 Envelope
OS compatibilityWindows 10, Windows 8.1, Windows 8, Windows 8 x64, Windows 7 x64, Windows 8.1 x64, Windows 7
Environment & compliance
Noise level (approx.)Operating:
14 dBA (Idle)
53 dBA (Print)
54 dBA (Copy)
55 dBA (Scan)
Duplex Print Noise Level
Operating:
50 dBA
More details
Best suited forMFC / All-In-One
Print languages, std.PCL 5c Emulation, PCL 5e Emulation, PCL 6 Emulation, Personal Printer Data Stream (PPDS), PostScript 3 Emulation, PDF 1.7 emulation, Direct Image
Maximum document enlargement25–400 %
Scan elementCIS
Maximum scan size8.5 in × 14 in
Standard paper capacity350 pages 20 lb or 75 gsm bond
Max input capacity900 pages 20 lb or 75 gsm bond
Standard output capacity150 pages 20 lb or 75 gsm bond
Media formatPaper Labels, Card Stock, Plain Paper, Envelopes, Refer to the Paper & Specialty Media Guide

Questions about this item

How do I confirm the printer is working correctly after connecting it via Ethernet?

Print a test page from the control panel and verify the first page appears in about 6.2 seconds at 600 x 600 dpi quality

What comes in the box and what must I purchase separately for printing and faxing?

The printer includes a starter toner cartridge, power cord and setup guide; you must buy a phone cable for fax and paper for the 350-page tray

Which paper capacity should I choose between the standard and maximum input for my monthly volume?

The standard tray holds 350 pages and the maximum capacity is 900 pages; match the tray size to your average monthly print volume up to 50,000 pages

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