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Lexmark CX421

How to Determine If a Computer is Running Microsoft Windows or macOS

Affected Products:

Operating System (OS): All Devices Running Microsoft Windows and macOS


Unlike certain software applications, device drivers such as printer drivers must match the operating system architecture.

Microsoft Windows (Windows OS)

  1. Right click on Computer/This PC icon in the start menu or desktop. Select Properties from the menu.

  2. Check the Operating System under Windows edition section.

  3. Check whether the Operating System runs on a 32-bit or 64-bit under System Type.

Macintosh Operating System (macOS)

  1. Click on the Apple icon located at the upper left of the screen.

  2. From the Apple menu, click on About This Mac.

  3. Click on the Overview tab.

Additional information:

For additional information, please see the following links below:


Lexmark provides third-party contact information as in this article to help you find technical support. Such third-party information may change without notice.

Still Need Help?

Have the following available when calling Lexmark Technical Support;

  • Printer model(s)

  • Printer serial number

  • Operating System


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