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.

Features
Product colour	Black, White
Certification	ICES-003 Class B, BSMI Class B, US FDA, UL 60950-1, FCC Class B, cUL CAN/CSA-C22.2 60950-1, CB EN/IEC 60950-1, CB EN/IEC 60825-1, CE DoC (EN 62301 Class B, EN 62311, CE EN/IEC 60950-1, CE EN/IEC 60825-1, EN 61000-3, EN 55022 Class B, EN 55024, UL), EFTA (CE), KCC, CCC, CECP, CEL, C-tick DoC, UL-AR, KC mark, UL GS mark, UCRF, EC 1275, DE-UZ 205, CNS-13438/14336,
Print technology	Laser
Printing	Color printing
Copying	Color copying
Scanning	Color scanning
Management protocols	DHCP, APIPA (AutoIP), BOOTP, RARP, mDNS, IGMP, WINS, DDNS, SNMPv3, SNMPv1, SNMPv2c, NTP, ICMP, HTTP, DNS, ARP, HTTPs (SSL/TLS), Finger
Duplex printing mode	Auto
Control type	Touch
Market positioning	Home & office
Duplex scanning mode	Auto
Duplex copying mode	Auto
Duplex printing	Yes
Duplex scanning	Yes
Duplex copying	Yes
Maximum duty cycle	75000 pages per month
Recommended duty cycle	750 - 5000 pages per month
Country of origin	China
Printer fonts	PCL,PostScript,Scalable
Page description languages	PCL 5,PCL 6,PCLm,PostScript 3
Performance
Print technology	Laser
Printing	Color printing
Copying	Color copying
Scanning	Color scanning
Maximum duty cycle	75000 pages per month
Product colour	Black, White
Recommended duty cycle	750 - 5000 pages per month
Management protocols	DHCP, APIPA (AutoIP), BOOTP, RARP, mDNS, IGMP, WINS, DDNS, SNMPv3, SNMPv1, SNMPv2c, NTP, ICMP, HTTP, DNS, ARP, HTTPs (SSL/TLS), Finger
Duplex printing mode	Auto
Market positioning	Home & office
Card reader integrated	No
Processor cores	2
Processor frequency	1000 MHz
Built-in processor	Yes
Input capacity
Maximum input capacity	750 sheets
Auto document feeder (ADF) input capacity	50 sheets
Output capacity
Maximum output capacity	100 sheets
Display
Display diagonal	2.8"
Built-in display	Yes
Printing
Print technology	Laser
Printing	Color printing
Print speed (black, normal quality, A4/US Letter)	26 ppm
Maximum resolution	600 x 600 DPI
Print speed (colour, normal quality, A4/US Letter)	26 ppm
Duplex printing mode	Auto
Print resolution colour	600 x 600 DPI
Print resolution black	600 x 600 DPI
Duplex printing	Yes
Printer fonts	PCL,PostScript,Scalable
Copying
Copying	Color copying
Copy speed (black, normal quality, A4)	26 cpm
Copy speed (colour, normal quality, A4)	26 cpm
Copier resize	25 - 400%
Duplex copying mode	Auto
Duplex copying	Yes
Scanning
Scanning	Color scanning
Optical scanning resolution	600 x 600 DPI
Maximum scan area	8.5 x 14" (216 x 356 mm)
Scanner type	Flatbed & ADF scanner
Scan to	E-mail, FTP, HTTP, USB
Scan speed (colour)	21 ppm
Scan speed (black)	48 ppm
Duplex scan speed (colour)	42 ppm
Duplex scan speed (black)	96 ppm
Image formats supported	JPEG,JPG,TIFF
Document formats supported	PDF
Optical scanning resolution (black)	600 x 600 ppi
Optical scanning resolution (colour)	600 x 600 ppi
Scan technology	CIS
Duplex scanning mode	Auto
Duplex scanning	Yes
Fax
Fax transmission speed	3 sec/page
Modem speed	33.6 Kbit/s
Storage
Card reader integrated	No
Processor
Processor cores	2
Processor frequency	1000 MHz
Built-in processor	Yes
Input & output capacity
Total number of input trays	2
Total input capacity	250 sheets
Total output capacity	10 sheets
Maximum input capacity	750 sheets
Maximum output capacity	100 sheets
Auto document feeder (ADF) input capacity	50 sheets
Maximum number of input trays	2
Paper handling
Maximum ISO A-series paper size	A4
ISO A-series sizes (A0...A9)	A4,A5,A6
Non-ISO print media sizes	Executive, Folio, Hagaki card, Legal, Oficio, Statement
Envelopes sizes	7 3/4,9,10,B5,C5,DL
Paper tray media types	Card stock, Envelopes, Glossy paper, Labels, Plain paper
Ports & interfaces
USB port	Yes
Direct printing	Yes
USB connector	USB Type-A / USB Type-B
USB 2.0 ports quantity	2
Network
Ethernet LAN	Yes
Wi-Fi	Yes
Ethernet LAN data rates	10,100,1000 Mbit/s
Wi-Fi standards	Wi-Fi 5 (802.11ac)
Supported network protocols (IPv6)	TCP/IP, TCP, UDP
Supported network protocols (IPv4)	TCP/IP, TCP, UDP
Security algorithms	IPSec, LEAP, MD5, MSCHAPv2, PEAP, SNMPv3, TLS, TTLS
Management protocols	DHCP, APIPA (AutoIP), BOOTP, RARP, mDNS, IGMP, WINS, DDNS, SNMPv3, SNMPv1, SNMPv2c, NTP, ICMP, HTTP, DNS, ARP, HTTPs (SSL/TLS), Finger
Technical details
Sustainability certificates	ENERGY STAR
Design
Product colour	Black, White
Display diagonal	2.8"
Country of origin	China
Certification	ICES-003 Class B, BSMI Class B, US FDA, UL 60950-1, FCC Class B, cUL CAN/CSA-C22.2 60950-1, CB EN/IEC 60950-1, CB EN/IEC 60825-1, CE DoC (EN 62301 Class B, EN 62311, CE EN/IEC 60950-1, CE EN/IEC 60825-1, EN 61000-3, EN 55022 Class B, EN 55024, UL), EFTA (CE), KCC, CCC, CECP, CEL, C-tick DoC, UL-AR, KC mark, UL GS mark, UCRF, EC 1275, DE-UZ 205, CNS-13438/14336,
Control type	Touch
Built-in display	Yes
Market positioning	Home & office
Power
Power consumption (ready)	17.5 W
Power consumption (sleep)	1.3 W
Energy Star Typical Electricity Consumption (TEC)	0.37 kWh/week
Power consumption (scanning)	21 W
Power consumption (printing)	400 W
Power consumption (copying)	395 W
System requirements
Windows operating systems supported	Windows 10,Windows 7,Windows 8,Windows 8.1
Linux operating systems supported	Fedora 27,Ubuntu 16.04,Ubuntu 18.04 LTS,openSUSE 42.3
Server operating systems supported	SUSE Linux Enterprise Server 10,SUSE Linux Enterprise Server 11,SUSE Linux Enterprise Server 12,Windows Server 2003,Windows Server 2003 x64,Windows Server 2008,Windows Server 2008 R2,Windows Server 2008 x64,Windows Server 2012
Software
Windows operating systems supported	Windows 10,Windows 7,Windows 8,Windows 8.1
Linux operating systems supported	Fedora 27,Ubuntu 16.04,Ubuntu 18.04 LTS,openSUSE 42.3
Server operating systems supported	SUSE Linux Enterprise Server 10,SUSE Linux Enterprise Server 11,SUSE Linux Enterprise Server 12,Windows Server 2003,Windows Server 2003 x64,Windows Server 2008,Windows Server 2008 R2,Windows Server 2008 x64,Windows Server 2012
Operational conditions
Operating temperature (T-T)	10 - 32 °C
Operating relative humidity (H-H)	8 - 80%
Operating altitude	0 - 120000" (0 - 3048 m)
Certificates
Certification	ICES-003 Class B, BSMI Class B, US FDA, UL 60950-1, FCC Class B, cUL CAN/CSA-C22.2 60950-1, CB EN/IEC 60950-1, CB EN/IEC 60825-1, CE DoC (EN 62301 Class B, EN 62311, CE EN/IEC 60950-1, CE EN/IEC 60825-1, EN 61000-3, EN 55022 Class B, EN 55024, UL), EFTA (CE), KCC, CCC, CECP, CEL, C-tick DoC, UL-AR, KC mark, UL GS mark, UCRF, EC 1275, DE-UZ 205, CNS-13438/14336,
Sustainability
Sustainability certificates	ENERGY STAR
Weight & dimensions
Width	16.2" (411.4 mm)
Depth	15.5" (393.7 mm)
Height	13.6" (345.4 mm)
Weight	42.8 lbs (19.4 kg)
Package width	17.3" (439.4 mm)
Package depth	21.9" (556.2 mm)
Package height	20.4" (518.1 mm)
Package weight	50 lbs (22.7 kg)
Packaging data
Included cartridge capacity (black)	1500 pages
Included cartridge capacity (CMY)	1500 pages
Package width	17.3" (439.4 mm)
Package depth	21.9" (556.2 mm)
Package height	20.4" (518.1 mm)
Package weight	50 lbs (22.7 kg)
Cartridge(s) included	Yes
Packaging content
Included cartridge capacity (black)	1500 pages
Included cartridge capacity (CMY)	1500 pages
Cartridge(s) included	Yes
Other features
Country of origin	China
Cartridge(s) included	Yes
Control type	Touch
Duplex printing	Yes