MX320/420 Series

Ambitious performer. Big-league features.

The MX320/420 Series offers print speed of up to 42 pages per minute (letter)¹, plus fax, automatic document feeder, and copy functions powered by a standard multi-core processor and a full gigabyte of memory. Connect with standard USB, gigabit ethernet, and Wi-Fi, depending on model. Plus, 350 sheets of standard input can expand up to 900 with optional trays.

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Performance and flexibility

Multi-core processing power and flexible media handling put outstanding printing capabilities at your fingertips.


MFPs built to protect and save you money

Designed with enterprise-level security, these energy-efficient devices get the job done.


What model is best for you?

Choose from the features to find available models that target your needs.

Model Print Speed Input Capacity (standard/maximum) Memory (RAM)
MX321ADN 38 ppm 350/900 1 GB DDR4
MX421ADE 42 ppm 350/900 1 GB DDR4

¹Print and copy speeds measured in accordance with ISO/IEC 24734 and ISO/IEC 24735 respectively (ESAT). For more information see: lexmark.com/isospeeds