MS420 Series

Conquer your goals with “just-right” monochromes

Strike the perfect balance of performance and affordability in small-workgroup mono printers’ standard two-sided output, enhanced security and built-in durability. Its multi-core processor supports output at up to 40 pages per minute (A4)¹, while long-lasting printing components reduce downtime. Plus, you can connect via USB, gigabit ethernet, or Wi-Fi, depending on model.

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Power and versatility

Powerful processing and a wide range of output possibilities help your business be more productive.


Security and savings

Enterprise-level security and energy efficiency make a powerful combination.


What model is best for you?

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

Model Print Speed Input Capacity (std/max) Memory (RAM)
MS421DN 40 ppm 350/900 512 MB 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