Lexmark CX421
Unlike certain applications, device drivers such as print drivers must match the operating system architecture.
Microsoft Windows (Windows OS)
Right click Computer/This PC icon in the start menu or desktop. Select Properties from the menu.
Check the Operating System under Windows edition section.
Check whether the Operating System runs on a 32-bit or 64-bit under System Type.
Macintosh Operating System (macOS)
Click the Apple icon at the upper left of the screen.
From the Apple menu, click About This Mac.
Click the Overview tab.
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.
LEGACY ID: HO3822
Installing your printer on a macOS ‑ Check out the following steps to get started.
Identifying the printer eSF version