Okidata ML420 Driver Download (Official)
The ML420 is a printer manufactured by Okidata. We recommend updating to the latest driver if printing causes programs to crash, or the printer won't print or if print quality is poor. Visitors have downloaded this file "4201DMZE.exe" 154 times with an aggregate rating of 5 out of 5 stars based on 7 reviews. Compatibility for this driver update includes PCs running Windows operating systems such as Windows XP. The total disk space used for this update is 1.1 MB.
Supported Models
ML420
ML421
Manufacturers
Supported Operating Systems
Windows XP, Windows 2000
File Name
Additional Notes
Language: English
Microline ML420/421 Drivers
Epson FX, IBM and Microline Emulation Drivers for OS listed.
Uploaded By
Andrews (DG Staff Member) on 11-Aug-2004
Related Driver Updates
How to Update ML420 Device Drivers
Step 1 - Download Your Driver
To get the ML420 driver, click the green download button above. After you complete your download, move on to Step 2.
If the driver listed is not the right version or operating system, search our driver archive for the correct version. Enter Okidata ML420 into the search box above and then submit. In the results, choose the best match for your PC and operating system.
Tech Tip: If you are having trouble deciding which is the right driver, try the Okidata Driver Update Utility. It is a software utility which automatically finds and downloads the right driver.
To find the newest driver, you may need to visit the Okidata website. Most major device manufacturers update their drivers regularly.
Step 2 - Install Your Driver
After downloading the new driver, proceed with installation. On Windows, use the built-in Device Manager utility to manage your system's devices and drivers. To access it:
Right-click the Start button
Select "Device Manager" from the menu
Locate the device needing the update
Right-click the device and choose "Update driver"
Follow the on-screen prompts to install
Once complete, restart your computer to ensure the new driver is fully implemented and functioning properly.
This process helps maintain your system's performance and compatibility with various hardware components.
Tech Tip: Driver downloads and updates come in a variety of file formats with different file extensions. For example, you may have downloaded an EXE, INF, ZIP, or SYS file. Each file type has a slighty different installation procedure to follow.
For more help, visit our Driver Support Page for step-by-step videos on how to install drivers for every file type.