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MS320/MS420 Series
Reliability. Security. Productivity.
MS421dn with optional tray
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Lexmark MS320/MS420 Series
Strike the perfect balance of performance and affordability in small-workgroup mono printing with standard two-sided output,
enhanced security and built-in durability. The Lexmark MS320/420 Series’ multi-core processor supports output at up to 42 pages
per minute* (38 pages per minute* for MS321dn), while long-lasting printing components reduce downtime. Plus, you can connect via
standard USB or gigabitethernet.
Robust, built-in security
} Lexmark’s full-spectrum security architecture helps keep
your information safe—on the document, the device, over
the network, and everywhere in between.
} A range of embedded features harden device
against attacks.
} Standard Condential Print feature (on MS421dn) helps
Get more done
ensure output security via simple PIN.
} Tackle your printing workload with the power of a 1-GHz
dual-core processor and 512 MB of memory.
} Get up to 42-page-per-minute printing (MS421dn) or
38-page-per-minute printing (MS321dn).
} Two-line LCD lets you congure, interact and monitor vital
system information.
} Use media sizes from A6 to legal in the paper tray,
plus smaller media and envelopes in the 100-sheet
multipurpose feeder.
Ready when you are
} Long-life fuser and imaging components extend uptime.
} Unison™ Toner replacement cartridges deliver up to 20,000
pages** of high-quality printing.
} Maximum input capacity of 900 pages means
fewer interruptions.
} Durable metal frame is designed for longevity.
} Keypoint Intelligence - Buyers Lab honored Lexmark
with a prestigious BLI PaceSetter award for Document
Imaging Security***.
Built for planet earth
} Energy management features reduce power consumption in
active use or sleep mode.
} Standard two-sided printing saves paper.
} Use of post-consumer recycled content in manufacturing
saves natural resources.
} Device is rated EPEAT® Silver and ENERGY STAR® certied.
} Recycle cartridges through the award-winning Lexmark
Cartridge Collection Program (LCCP).
*Print and copy speeds measured in accordance with ISO/IEC 2473 4 and ISO/IEC 24735 respectively (ESAT). For more information see: www.lexmark .com/ISOspeeds .
**Average standard page yield value declared in accordance with ISO/IEC 19752.
***Award based on Nor th America data.
lexmark.com
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Lexmark MS320/MS420 Series
or
1 Printer with 2-line display
10.2 x 15.7 x 14.7 inches
260 x 399 x 374 mm
2 550-sheet tray
5 x 15.7 x 14.7 inches
126 x 389 x 374 mm
3 250-sheet tray
3.7 x 15.7 x 14.7 inches
95 x 389 x 374 mm
Standard
Optional
Supports one optionaltray.
© 2018 Lexmark. All rights reserved.
Lexmark, the Lexmark logo and Unison are trademarks of Lexmark International, Inc., registere d in the United States and/or other countries. AirPrint and the AirPrint Logo
are trademarks of Apple, Inc. ENERGY STAR® is a U.S. registered mark. EPEAT® is a trademark of EPE AT, Inc. in the United States and other countries. Google Cloud Print is a
trademark of Google, Inc. MOPRIA®, the Mopria® Logo™ and the Mopria® Alliance logos are trademarks, se rvice marks, and certication marks of Mopria Alliance, Inc. in the
United States and other countries. All other trademarks are the property of their respective owners.
This product includes software developed by the OpenSSL Project for use in the Open SSL Toolkit (http:// ww.openssl.org/).
lexmark.com
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Product specications Lexmark MS321dn Lexmark MS421dn
Printing
Display
Print Speed: Up to
Time to First Page: As fast as
Print Resolution
Memory / Processor
Hard Disk
Recommended Monthly Page Volume
Maximum Monthly Duty Cycle: Up to
Supplies
Laser Cartridge Yields (up to)
Imaging Unit Estimated Yield: Up to
Cartridge(s) Shipping with Product
2
7
6
3
1
4
1
Paper Handling
Included Paper Handling
Optional Paper Handling
Paper Input Capacity: Up to
Paper Output Capacity: Up to
Media Types Supported
Media Sizes Supported
General Information
Standard Ports
Noise Level: Operating
Specied Operating Environment
Limited Warranty - See Statement of Limited
Warranty
Size (in. - H x W x D) / Weight (lb.)
5
15,000-page High Yield Cartridge, 6,000-page Cartridge 15,000-page High Yield Cartridge, 20,000-page Extra High Yield
2,000-page Starter Return Program Toner Cartridge 3,000-page starter Return Program Toner Cartridge
Card Stock, Envelopes, Paper Labels, Plain Paper, Transparencies, Refer to the Card Stock & Label Guide.
7 3/4 Envelope, 9 Envelope, A4, A5, A6, B5 Envelope, C5 Envelope,
DL Envelope, Executive, Folio, JIS-B5, 10 Envelope, Legal, Letter,
Altitude: 0 - 5000 Meters (16,404 Feet), Humidity: 8 to 80%
Relative Humidity, Temperature: 10 to 32°C (50 to 90°F)
2-line 128 x 32 pixel All Points Addressable (APA) monochrome OLED display
Black: 38 ppm Black: 42 ppm
Black: 6.5 seconds Black: 6.25 seconds
Black: 1200 Image Quality, 1200 x 1200 dpi, 2400 Image Quality, 300 x 300 dpi, 600 x 600 dpi
Standard: 512 MB / Maximum: 512 MB / 1.0 GHZ MHz
Not Available
500 - 6000 pages 1000 - 10000 pages
50000 pages per month 100000 pages per month
Cartridge, 6,000-page Cartridge
60000 pages, based on 3 average letter/A4-size pages per print job and ~ 5% coverage
100-Sheet Multipurpose Feeder, 150-Sheet Output Bin, 250-Sheet Input, Integrated Duplex
250-Sheet Tray, 550-Sheet Tray, 550-Sheet Lockable Tray
Standard: 300 pages 20 lb or 75 gsm bond / Maximum: 900 pages 20 lb or 75 gsm bond
Standard: 150 pages 20 lb or 75 gsm bond / Maximum: 150 pages 20 lb or 75 gsm bond
10 Envelope, 7 3/4 Envelope, 9 Envelope, A4, A5, DL Envelope,
Ocio, Statement, Universal
Executive, Folio, JIS-B5, Legal, Letter, Statement, Universal, Ocio,
A6
Gigabit Ethernet (10/100/1000), USB 2.0 Specication Hi-Speed Certied (Type B)
Print: 54 dBA Print: 55 dBA
Altitude: 0 - 5000 Meters (16,404 Feet), Humidity: 8 to 80%
Relative Humidity, Temperature: 16 to 32°C (60 to 90°F)
1-Year Exchange, Return-to-Base Service
10.2 x 15.7 x 14.7 in. / 30.6 lb. 10.2 x 15.7 x 14.7 in. / 30.9 lb.
All information in this brochure is subject to change without notice. Lexmark is not liable for any errors or omissions.
1
Average standard page yield value declared in accordance with ISO/IEC 19752. 2Print and copy spee ds measured in accordance with ISO/IEC 24734 and ISO/IEC 24735
respectively (ESAT). For more information see: www.lexmark.com/ISOspeeds. 3Product functions only with replacement cartridges designed for use in a specic geographical
region. See ww w.lexmark.com/regions for more details. 4Actual Yield may vary based on othe r factor s such as device speed, paper size and feed orientation, toner coverage,
tray source, percentage of black-only printing and average print job complexity. 5Printers are sold subject to certain license/agreement conditions. See www.lexmark.com/
printerlicense for details. 6”Maximum Monthly Duty Cycle” is dened as the maximum number of pages a device could deliver in a month using a multishif t operation. This metric
provides a comparison of robustness in relation to other Lexmark printers and MFPs. 7”Recommended Monthly Page Volume” is a range of pages that helps customers evaluate
Lexmark’s product offerings based on the average number of pages customers plan to print on the device each month. Lexmark recommends that the number of pages per
month be within the stated range for optimum device performance, based on factors including: supplies replacement intervals, paper loading intervals, speed, and typical
customer usage.
lexmark.com
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