Print more, stop less
Optional High Yield Unison™ toner provides up to 15,000 pages of output, whilst an optional paper tray increases total input capacity by up to 900 sheets for more printing and less downtime. And with its steel frame and lifetime fuser, the MX331adn is built to last.

Solid performance, flexible connectivity
Power through challenging jobs with output of up to 38 pages per minute* and automatic single-sided scanning at up to 46 images per minute. Connect via USB or Ethernet to give your whole team access.

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.

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

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).

Versatility that fits
Measuring just 339 mm high x 411 mm wide x 366 mm deep, the business-class MX331adn fits almost anywhere. Its compact size and light weight make it easy to set up and easy to move.

Specification

Certificates
Certification	ENERGY STAR, ICES-003 Class B, BSMI Class B, US FDA, UL 60950-1, FCC Class B, cUL CAN/CSA-C22.2 60950-1, NOM, 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, EuP, EN 55024, UL), EFTA (CE), KCC, CCC, CECP, CEL, C-tick DoC, UL-AR, KC mark, UL GS mark, EC 1275, MET-I, ISO 532B, ECMA-370, TED, GOST-R, SII, TER, DE-UZ 205, China Green Product (CGP)
Copying
Duplex copying	Yes
Copying	Mono copying
Maximum copy resolution	600 x 600 DPI
Copy speed (black, normal quality, A4)	38 cpm
Time to first copy (black, normal)	6.2 s
Copier resize	25 - 400%
Design
Product colour	Black, White
Built-in display	Yes
Display	LCD
Display diagonal	7.11 cm (2.8")
Control type	Touch
Colour display	Yes
Fax
Duplex faxing	Yes
Faxing	Mono faxing
Fax transmission speed	3 sec/page
Modem speed	33.6 Kbit/s
Features
Recommended duty cycle	500 - 5000 pages per month
Maximum duty cycle	50000 pages per month
Number of print cartridges	1
Printing colours	Black
Page description languages	PCL 5Ce, PCL 5c, PCL 6, PDF 1.7, PPDS, PostScript 3
Country of origin	China
Input & output capacity
Total number of input trays	1
Total input capacity	350 sheets
Total output capacity	150 sheets
Auto document feeder (ADF)	Yes
Auto document feeder (ADF) input capacity	50 sheets
Auto document feeder (ADF) output capacity	50 sheets
Maximum input capacity	900 sheets
Maximum output capacity	150 sheets
Network
Wi-Fi	No
Ethernet LAN	Yes
Security algorithms	HTTPS, PEAP, SNMPv3, TLS, TTLS
Mobile printing technologies	Apple AirPrint
Operational conditions
Operating relative humidity (H-H)	8 - 80%
Operating temperature (T-T)	10 - 32 °C
Operating altitude	0 - 2896 m
Packaging content
Cartridge(s) included	Yes
Included cartridge capacity (black)	1500 pages
Cables included	AC
Packaging data
Package width	420 mm
Package depth	465 mm
Package height	385 mm
Package weight	14.7 kg
Paper handling
Maximum ISO A-series paper size	A4
ISO A-series sizes (A0...A9)	A4
JIS B-series sizes (B0...B9)	B5
Envelopes sizes	7 3/4, 9, 10, DL
Paper tray media weight	60 - 120 g/m²
Multi-Purpose Tray media weight	60 - 217 g/m²
Performance
Maximum internal memory	512 MB
Card reader integrated	No
Internal memory	512 MB
Processor frequency	1000 MHz
Sound pressure level (printing)	53 dB
Sound pressure level (duplex printing)	50 dB
Sound pressure level (copying)	54 dB
Sound pressure level (scanning)	55 dB
Ports & interfaces
Direct printing	No
USB port	Yes
USB connector	USB Type-B
USB 2.0 ports quantity	1
Power
Power consumption (average operating)	530 W
Power consumption (sleep)	0.8 W
Power consumption (off)	0.1 W
Energy Star Typical Electricity Consumption (TEC)	0.44 kWh/week
Printing
Duplex printing mode	Auto
Print technology	Laser
Printing	Mono printing
Duplex printing	Yes
Maximum resolution	600 x 600 DPI
Print speed (black, normal quality, A4/US Letter)	38 ppm
Warm-up time	6.2 s
Scanning
Scanning	Colour scanning
Optical scanning resolution	600 x 600 DPI
Maximum scan area	215.9 x 355.6 mm
Scanner type	Flatbed & ADF scanner
Scan technology	CIS
Scan to	E-mail, FTP, LDSS, PC, USB
Image formats supported	JPEG, JPG, TIFF
Document formats supported	PDF, XPS
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, Windows 8.1 x64
Linux operating systems supported	Yes
Other operating systems supported	Yes
Weight & dimensions
Width	411 mm
Depth	366 mm
Height	339 mm
Weight	12.8 kg

Features

Laser Mono printing

600 x 600 DPI

Printing colours: Black

A4 38 ppm

Mono copying Colour scanning Mono faxing

Apple AirPrint

USB port Ethernet LAN

Internal memory: 512 MB 1000 MHz

12.8 kg