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 to keep your information safe - in the document, on the device, over the network and at all points in between.

Compact and durable
Compact and lightweight, the CS431dw fits almost anywhere. But its steel frame and long-life imaging components mean that it’s also built to last.

Colour you can count on
Get rich, vibrant colour 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 to support ratings of EPEAT® Silver and ENERGY STAR® certified. The Lexmark Cartridge Collection Programme (LCCP) and Lexmark Equipment Collection Programme (LECP) minimise waste and support recycling (availability varies by country).

Interact with ease
A 2.8 inch colour touch screen enables convenient interaction with essential system functions and task information, whilst built-in cloud connectors let you securely access 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.

Specification

Design
Market positioning	Home & office
Product colour	Black, White
Built-in display	Yes
Display	LCD
Display diagonal	7.11 cm (2.8")
Control type	Touch
Features
Maximum duty cycle	75000 pages per month
Recommended duty cycle	750 - 5000 pages per month
Printing colours	Black, Cyan, Magenta, Yellow
Number of print cartridges	4
Page description languages	PCL 5, PCL 6, PCLm, PostScript 3
Country of origin	China
Input & output capacity
Total number of input trays	1
Total input capacity	250 sheets
Total output capacity	100 sheets
Maximum input capacity	750 sheets
Maximum output capacity	100 sheets
Network
Wi-Fi	Yes
Ethernet LAN	Yes
Ethernet LAN data rates	10,100,1000 Mbit/s
Wi-Fi standards	Wi-Fi 5 (802.11ac)
Security algorithms	HTTPS, IPSec, LEAP, MD5, MSCHAPv2, PEAP, SNMPv3, TLS
Management protocols	DHCP, APIPA (AutoIP), BOOTP, RARP, mDNS, IGMP, WINS, DDNS, SNMPv3, SNMPv1, SNMPv2c, NTP, ICMP, HTTP, DNS, ARP, HTTPs (SSL5/TLS), SMTP, Finger
Operational conditions
Operating temperature (T-T)	10 - 32 °C
Operating relative humidity (H-H)	8 - 80%
Operating altitude	0 - 3048 m
Packaging content
Cartridge(s) included	Yes
Included cartridge capacity (black)	1500 pages
Included cartridge capacity (CMY)	1500 pages
Cables included	AC
Packaging data
Package width	332 mm
Package depth	556 mm
Package height	519 mm
Package weight	19.1 kg
Paper handling
Maximum ISO A-series paper size	A4
Paper tray media types	Card stock, Envelopes, Glossy paper, Plain paper
ISO A-series sizes (A0...A9)	A4, A5, A6
Non-ISO print media sizes	Executive, Folio
JIS B-series sizes (B0...B9)	B5
Envelopes sizes	7 3/4, 9, 10, B5, C5, DL
Performance
Internal memory	512 MB
Maximum internal memory	512 MB
Built-in processor	Yes
Sound pressure level (printing)	53 dB
Sound pressure level (duplex printing)	53 dB
Sound power level (standby)	14 dB
Ports & interfaces
Direct printing	No
USB port	Yes
USB 2.0 ports quantity	1
USB connector	USB Type-B
Power
Power consumption (printing)	400 W
Power consumption (ready)	17 W
Power consumption (standby)	1.2 W
Energy Star Typical Electricity Consumption (TEC)	0.36 kWh/week
Printing
Duplex printing mode	Auto
Print resolution colour	600 x 600 DPI
Print speed (colour, normal quality, A4/US Letter)	24.7 ppm
Colour	Yes
Print technology	Laser
Duplex printing	Yes
Maximum resolution	600 x 600 DPI
Print speed (black, normal quality, A4/US Letter)	24.7 ppm
Warm-up time	11 s
Time to first page (black, normal)	10.9 s
Time to first page (colour, normal)	11 s
Sustainability
Sustainability certificates	ENERGY STAR
System requirements
Windows operating systems supported	Windows 10, Windows 7, Windows 7 x64, Windows 8, Windows 8 x64, Windows 8.1
Linux operating systems supported	Yes
Server operating systems supported	Windows Server 2016
Other operating systems supported	Yes
Weight & dimensions
Width	411.2 mm
Depth	394.1 mm
Height	243.7 mm
Weight	16.1 kg

Features

Printing colours: Black, Cyan, Magenta, Yellow

Internal memory: 512 MB Built-in processor

A4 24.7 ppm

Total number of input trays: 1 Total input capacity: 250 sheets Total output capacity: 100 sheets

Maximum duty cycle: 75000 pages per month

600 x 600 DPI

Home & office Laser Colour

LCD Built-in display

USB port Wi-Fi Ethernet LAN

Duplex printing