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SKU : 40N9370

Brand : Lexmark

Color Laser

Duplex (2-sided) Printing: Integrated Duplex

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Small workgroup color versatility is easy to deploy and share with the compact, lightweight Lexmark CX431adw multifunction, offering output at up to 26 ppm.
Full-spectrum security

Lexmark’s comprehensive approach to product security is a design and engineering mandate across our entire product portfolio. Our security features help keep your information safe—in the document, on the device, over the network and at all points in between.

Color you can count on

Get rich, vibrant color in seconds with Lexmark’s unique Unison™ toner. And easy-to-change Extra High Yield replacement cartridges give you more printing and less downtime.

Save paper, save energy

Automatic two-sided printing is standard, along with built-in energy-saving modes that help support ratings of EPEAT® Silver and ENERGY STAR® certified. The Lexmark Cartridge Collection Program (LCCP) and Lexmark Equipment Collection Program (LECP) minimize waste and support recycling (availability varies by country).

Interact with ease

Take command of printing, copying, faxing, and automatic two-sided scanning with a 2.8-inch [7.2-cm] color touch screen. It not only supports convenient interaction with essential system functions and task information, but includes built-in cloud connectors to help you save scans to and retrieve files from popular cloud services Box, DropBox, Google Drive, and Microsoft OneDrive.

Classic connections, wireless convenience

In addition to Gigabit Ethernet and USB connectivity, dual-band Wi-Fi makes it fast and easy for mobile users to get output via the Lexmark Mobile Print app, as well as Google Cloud Print, Mopria®, and AirPrint technologies. And the Lexmark Mobile Assistant app simplifies wireless configuration.

Compact and durable

Compact and lightweight, the CX431adw fits almost anywhere. But its steel frame and long-life imaging components mean it’s also built to last.

Additional information

Packaged Size

20.4 x 17.3 x 21.9 in. (H x W x D)


Color Copying, Color Printing, Color Scanning, Faxing

Workgroup Size

Small Workgroup

Standard Ports

Gigabit Ethernet (10/100/1000), \02.11ac Wireless, Front Hi-Speed USB Port Compatible with USB 2.0 Specification (Type A), USB 2.0 Specification Hi-Speed Certified (Type B)

Size (in. - H x W x D)

13.6 x 16.2 x 15.5 in.

Weight (lb.)

42.7 lb.

Packaged Weight (lb.)

50 lb

Copy Speed

Up to: Black: 26 cpm (Letter)
Color: 26 cpm (Letter)

Copy Speed Duplex

Up to: Black: 26 spm (Letter)
Color: 26 spm (Letter)

Time to First Copy

As fast as: Black: 12.1 seconds
Color: 13.3 seconds

Reduce / Enlarge Range

25 – 400 %

Modem Speed

Max is 33,600 bps, V.34 Half-Duplex Kbps

Fax Transmission Speed

< 3 seconds per page

Print Speed

Up to: Black: 26 ppm (Letter)
Color: 26 ppm (Letter)

Print Speed Duplex

Up to: Black: 13 spm (Letter)
Color: 13 spm (Letter)

Time to First Page

As fast as: Black: 10.8 seconds
Color: 11 seconds

Print Resolution

Black: 4800 CQ (2400 x 600 dpi)
Color: 4800 CQ (2400 x 600 dpi)


2-sided: Integrated Duplex

Printable Area

0.17 inches of the top, bottom, right and left edges (within)

Scanner Type / ADF Scan

Flatbed scanner with ADF
DADF (single pass Duplex)

Scan Area

8.5 x 14 inches (Maximum)

A4/Ltr Simplex Scan Speed

Up to: Black: 45 / 48 sides per minute
Color: 20 / 21 sides per minute

A4/Ltr Duplex Scan Speed

Up to: Black: 90 / 96 sides per minute
Color: 40 / 42 sides per minute

Scan Technology


Optical Scanning Resolution

600 X 600 dpi (black), up to 600 X 600 dpi (color)

Scan File Formats Send as


Scan Destinations

e-mail, USB or Network connected computer, USB Flash drive, FTP


50-Sheet Automatic Document Feeder

ADF Paper Input Capacity / ADF Paper Output Capacity

Up to: 50 pages 20 lb or 75 gsm bond, Up to: 50 pages 20 lb or 75 gsm bond

Media Types Supported

Hagaki Card, Paper Labels, Card Stock, Plain Paper, Envelopes, Glossy Paper, Refer to the Paper & Specialty Media Guide

Finishing Option


Number of Paper Inputs

Standard: 2, Maximum: 2

Paper Input Capacity

Standard: 250+1 pages 20 lb or 75 gsm bond, Maximum: 750+1 pages 20 lb or 75 gsm bond, 250+1 pages 20 lb or 75 gsm bond

Paper Output Capacity

Standard: 100 pages 20 lb or 75 gsm bond, Maximum: 100 pages 20 lb or 75 gsm bond

Paper Weight Range Supported

16 – 47 lb. (Standard Tray)

Optional Paper Handling

250-Sheet Tray

Maximum Monthly Duty Cycle

Up to: 75000 pages per month3

Laser Cartridge Yields

6,700-page Color (CMY) Extra High Yield Cartridges, 6,000-page Black Extra High Yield Cartridge, 1,500-page Black and Color (CMYK) Cartridges

Cartridge(s) Shipping with Product

1,500-page Black Return Program Toner Cartridge, 1,500-page Color (CMY) Return Program Toner Cartridges

Replacement Cartridges:

Product functions only with replacement cartridges designed for use in a specific geographical region.

Processor Speed

Dual Core, 1.0 GHz


Standard: 1 GB, Maximum: 1 GB, Standard: 1024 MB, Maximum: 1024 MB

Hard Disk

Not Available

Printer Languages

PCL 5c Emulation, PCL 5e Emulation, PCLm, PCL 6 Emulation, PostScript 3 Emulation, PDF 1.7 emulation, Direct Image

Fonts and Symbol Sets

2 PCL bitmap fonts, OCR-A, OCR-B scalable PCL 5e fonts, For more information, refer to the Technical Reference., 91 scalable PostScript fonts, 3 of 9 scalable PCL 5e fonts in Narrow, Regular and Wide, 89 scalable PCL fonts

Touch Screen Display


Direct USB


Ethernet Network




Network Protocol Support


Network Printing Methods

Microsoft Web Services WSD, FTP, TFTP, Enhanced IP (Port 9400), IPP 1.0, 1.1, 2.0 (Internet Printing Protocol)

Network Management Protocols


Network Security

IPSec, SNMPv3, 802.1x Authentication: MD5, MSCHAPv2, LEAP, PEAP, TLS, TTLS, TCP/IP port access control

Limited Warranty

1-Year Onsite Service, Next Business Day

In the Box

1,500*-page Black Print Cartridge, 1,500*-page Color (CMY) Print Cartridges, Lexmark CX431adw Color Laser Multifunction Printer, Warranty Information, Worldwide Safety Information Sheet, Software and Documentation CD, Worldwide Printer Setup Sheet, Power Cord