Light, compact and fast, the MS431dn supports output of up to 40 pages per minute, multiple connectivity options and an optional 550-sheet paper tray.

Print more, stop less
In addition to a first page as fast as 5.9 seconds and output of up to 40 pages per minute, optional Extra High Yield Unison™ toner provides up to 20,000 pages of output. Add an optional paper tray that increases total input capacity by up to 900 sheets for more printing and less downtime.

Solid performance, flexible connectivity
Get your first page as fast as 5.9 seconds, and power through challenging jobs with a 1-GHz dual-core processor and 256 MB of memory. 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.

Hands-off durability
With its steel frame and lifetime fuser, the MS431dn is built to last.

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).

Output that fits
Measuring just 222 mm high x 368 mm wide x 366 mm deep, the business-class MS431dn fits almost anywhere. Its compact size and light weight make it easy to set up and easy to move.

Specification

Design
Product colour	Black, White
Built-in display	Yes
Display	LCD
Colour display	No
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)
Features
Maximum duty cycle	80000 pages per month
Recommended duty cycle	800 - 8000 pages per month
Printing colours	Black
Number of print cartridges	1
Printer fonts	Bitmap, PCL, PostScript
Bitmap fonts	OCR-A, OCR-B
Country of origin	China
Input & output capacity
Total number of input trays	1
Total input capacity	350 sheets
Total output capacity	150 sheets
Paper tray 1 input capacity	350 sheets
Multi-Purpose tray	Yes
Maximum input capacity	900 sheets
Maximum output capacity	150 sheets
Network
Mobile printing technologies	Apple AirPrint
Management protocols	DHCP, BOOTP, RARP, mDNS, IGMP, WINS, DDNS, SNMPv3, SNMPv1, SNMPv2c, Telnet, NTP, ICMP, HTTP, DNS, ARP, HTTPs (SSL/TLS), SMTP, Finger
Security algorithms	LEAP, MD5, MSCHAPv2, SNMPv3, TLS, TTLS
Ethernet LAN data rates	10,100,1000 Mbit/s
Ethernet LAN	Yes
Wi-Fi	No
Operational conditions
Operating altitude	0 - 2.896 m
Operating relative humidity (H-H)	8 - 80%
Operating temperature (T-T)	10 - 32 °C
Other features
Printing	Mono printing
Packaging content
Cartridge(s) included	Yes
Included cartridge capacity (black)	3000 pages
Cables included	AC
Packaging data
Package width	410 mm
Package depth	420 mm
Package height	280 mm
Package weight	10.5 kg
Paper handling
Maximum ISO A-series paper size	A4
Paper tray media types	Card stock, Envelopes, Plain paper
ISO A-series sizes (A0...A9)	A4, A6
JIS B-series sizes (B0...B9)	B5
Envelopes sizes	7 3/4, 9, 10, B5, C5, DL
Performance
Built-in processor	Yes
Sound pressure level (printing)	53 dB
Sound pressure level (duplex printing)	50 dB
Maximum internal memory	256 MB
Internal memory	256 MB
Ports & interfaces
USB connector	USB Type-B
USB 2.0 ports quantity	1
USB port	Yes
Direct printing	No
Power
Energy Star Typical Electricity Consumption (TEC)	0.47 kWh/week
Power consumption (ready)	4.9 W
Power consumption (printing)	570 W
Printing
Duplex printing mode	Auto
Colour	No
Print technology	Laser
Duplex printing	Yes
Maximum resolution	600 x 600 DPI
Print speed (black, normal quality, A4/US Letter)	40 ppm
Time to first page (black, normal)	5.9 s
Sustainability
Sustainability certificates	ENERGY STAR
System requirements
Other operating systems supported	Yes
Linux operating systems supported	Yes
Windows operating systems supported	Windows 10, Windows 7, Windows 7 x64, Windows 8, Windows 8.1, Windows 8.1 x64
Weight & dimensions
Depth	363 mm
Height	222 mm
Weight	9.3 kg
Width	368 mm

Features

Laser

600 x 600 DPI

Printing colours: Black

A4 40 ppm

Duplex printing

USB port Ethernet LAN

LCD Built-in display

Maximum duty cycle: 80000 pages per month

Total number of input trays: 1 Total input capacity: 350 sheets Total output capacity: 150 sheets

Internal memory: 256 MB Built-in processor