Introduction

Output that fits
Measuring just 8.7 inches high x 14.5 inches wide x 14.3 inches deep (222 mm high x 368 mm wide x 363 mm deep), the business-class MS331dn fits almost anywhere. Its compact size and light weight make it easy to set up and easy to move.

Print more, stop less
Available High Yield UnisonT toner provides up to 15,000 pages of output, while an optional paper tray increases total input capacity up to 900 sheets for more printing and less downtime.

Solid performance, flexible connectivity
Get your first page as fast as 6.2 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 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 MS331dn is built to last.

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).

Printing

Duplex printing mode

Auto

Print resolution black

600 x 600 DPI

Colour

N

Print technology

Laser

Duplex printing

Y

Maximum resolution

600 x 600 DPI

Print speed (black, normal quality, A4/US Letter)

40 ppm

Warm-up time

6.2 s

Features

Maximum duty cycle

50000 pages per month

Recommended duty cycle

500 - 5000 pages per month

Printing colours

Black

Number of print cartridges

1

Page description languages

HTML Direct Image Space,PCL 5c,PCL 5e,PCL 6,PDF 1.7,PPDS

Printer fonts

PCL,PPDS

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

Maximum input capacity

900 sheets

Maximum output capacity

150 sheets

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,A5

JIS B-series sizes (B0...B9)

B5

Envelopes sizes

7 3/4,9,10,B5,C5,DL

Ports & interfaces

Direct printing

Y

USB port

Y

USB 2.0 ports quantity

1

USB connector

USB Type-B

Network

Wi-Fi

N

Ethernet LAN

Y

Cabling technology

10/100Base-T(X)

Ethernet LAN data rates

10,100 Mbit/s

Management protocols

DHCP, BOOTP, RARP, mDNS, IGMP, WINS, DDNS, SNMPv3, SNMPv1, SNMPv2c, Telnet, NTP, ICMP, HTTP, DNS, ARP, HTTPs (SSL/TLS), SMTP, Finger

Mobile printing technologies

Apple AirPrint

Performance

Internal memory

256 MB

Maximum internal memory

256 MB

Built-in processor

Y

Sound pressure level (printing)

53 dB

Sound pressure level (duplex printing)

50 dB

Design

Product colour

Black, White

Built-in display

Y

Display

LCD

Colour display

N

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)

Power

Power consumption (printing)

550 W

Power consumption (ready)

5.5 W

Energy Star Typical Electricity Consumption (TEC)

0.45 kWh/week

System requirements

Windows operating systems supported

Windows 10,Windows 7,Windows 7 x64,Windows 8,Windows 8.1,Windows 8.1 x64

Linux operating systems supported

Y

Server operating systems supported

Windows Server 2016,Windows Server 2019

Other operating systems supported

Y

Operational conditions

Operating temperature (T-T)

10 - 32 °C

Operating relative humidity (H-H)

8 - 80%

Operating altitude

0 - 2896 m

Sustainability

Sustainability certificates

ENERGY STAR

Weight & dimensions

Width

368 mm

Depth

363 mm

Height

222 mm

Weight

9.3 kg

Packaging data

Package width

410 mm

Package depth

420 mm

Package height

280 mm

Package weight

10.5 kg

Packaging content

Cartridge(s) included

Y

Included cartridge capacity (black)

1500 pages

Power cord included

Y