ZT421 Industrial Printer Support
The ZT421 is part of the ZT400 Series Printer family.
Retain proof of purchase for warranty confirmation.
+ First Time Setup / Getting Started
The Setup guidelines below will take you to English documentation. You can access the localized User Guides in the MANUALS section.
IMPORTANT! Do not connect your printer to a computer yet!
- If you connected your printer to a computer via USB before driver installation, the printer might appear as an unknown (unspecified) device in “Devices and Printers.”
- If necessary, follow these recovery steps before proceeding to Step 1.
1. Download and install the recommended Windows Printer Driver v8.
- Download the driver from the DRIVERS section below.
- Follow the instructions in Installing the Drivers and Running the Printer Installation Wizard
2. Connecting the printer
- Connect the printer to a USB port on your computer.
- Connect the printer to your wireless network (Wi-Fi).
- Connect the printer to your network through the Ethernet port.
3. Load media (media usually means labels, but it also includes tag stock, receipt paper, and other things that can be printed on).
- You can watch the English video. Some non-English videos are available in the HOW-TO VIDEOS section below.
- The media settings must match the actual media that you are using.
How to identify media type. - For accurate media detection, you may need to adjust the position of the reflective sensor.
Review Adjusting the Media Sensor Position.
- You can watch the English video. Some non-English videos are available in the HOW-TO VIDEOS section below.
- How to find out if you have thermal transfer media?
Do a media scratch test. - This printer uses a ribbon coated with ink on the outside. How to find out which side of the ribbon is coated?
Perform an adhesive test or a ribbon scratch test.
6. Calibrate ribbon and media sensors.
- When changing the size or type of media.
- If printing issues are observed, such as skipped labels, vertical image/label drift, or ribbon out or media out errors.
- You can watch the English video. Some non-English videos are available in the HOW-TO VIDEOS section below.
7. The printer settings must match the supplies you use for your print job. Adjust the printer settings using Zebra Setup Utilities software or Windows Printer Driver v8.
+ Drivers
If you had connected your printer to the computer via USB prior to driver installation, follow these recovery steps before printer driver installation.
ZT421 Drivers - Recommended
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Windows Printer Driver v8
Version 8.6.5.26125
Download 28 MB View release notes
This is the recommended driver to use with your printer.
'ZDesigner Printer Driver' is for use with ZebraDesigner 3 and other Windows applications.
OPERATING SYSTEM versions: Windows 10/11, Windows Server 2016/2019/2022 (see Release Notes for details)
How to Install Printer Driver v8
Printer Configuration Utility
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Zebra Printer Setup Utilities
Version 1.1.9.1297
Download 12 MB View release notes
Use this software to configure your printer after Printer Driver installation.
OPERATING SYSTEM versions: Windows 10/11, Windows Server 2016/2019/2022 (see Release Notes for details)
How to Configure Printer Settings with Zebra Setup Utilities
Alternative Driver
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Windows Printer Driver v5
Version 5.1.17.7412
Download 13 MB View release notes
Use this driver if you need to use either CPCL or EPL printer command languages.
'ZDesigner Printer Driver' is compatible with ZebraDesigner 3 and prior versions.
OPERATING SYSTEM versions: Windows 10/11, Windows Server 2016/2019/2022 (see Release Notes for details)
How to Install Driver v5
Other Drivers
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OPOS Driver
Version 1.14.1.143
Download 7 MB View release notes
Use this OLE for Retail POS driver to develop applications that are compatible with the Unified POS specification. See the release notes for printer compatibility and system requirements.
OPERATING SYSTEM: Windows 10/11
Third-Party
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Information about CUPS Driver for label printers.
OPERATING SYSTEM: Mac OS, Linux/Unix
Download 476 KB
Install CUPS Driver for Zebra Printer in Mac OS
+ Manuals
ZT421 Set-Up and User Guides
+ How-To Videos
ZT421 videos
+ Software
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Zebra Setup Utilities Support for Printers
Utility to configure barcode label printers.
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ZebraDesigner 3 Software Support
Software to design barcode labels.
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ZDownloader (Firmware Download Utility)
Utility to upload printer OS / firmware and service packs to barcode label printers.
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Printer Fonts
Additional font packages for barcode label printers.
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ZebraDesigner for Developers 3 Software Support
Software to develop customized label templates.
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Customizable Front Panel Examples
Custom printer menu examples in WML and XML programming languages
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Zebra Basic Interpreter (ZBI)
Application to customize Zebra printers.
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ZebraNet Bridge Enterprise
Software to centrally deploy, manage and monitor Zebra printers from a single computer anywhere on your global network.
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PDF Direct - Virtual Device Support
PDF Direct allows you to print PDF documents directly to Zebra Link-OS printers from ERP systems, such as Oracle and SAP, without middleware.
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Printer Profile Manager Enterprise (PPME) Support
Application to create printer configuration and manage Link-OS printers remotely from a single location.
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PrintSecure Administration Files
Pre-made printer administration files to protect you printer data and infrastructure.
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Airwatch Connector Support
Application to manage Link-OS printers directly from the AirWatch environment across wireless and Ethernet infrastructures.
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SOTI MobiControl Connector Support
Application to manage Link-OS printers directly from the SOTI MobiControl environment across wireless and Ethernet infrastructures.
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ZebraDesigner 2 Software Support
Discontinued software to design barcode labels.
Developer Tools
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Developer Tools: Browser Print, PrintConnect, Network Connect
Browser Print (USB, Network or Bluetooth printing to browser-based applications.); PrintConnect for Android (Label and receipt printing capability for Android solutions.); Network Connect (Ethernet/IP protocol support to connect a printer directly to a Rockwell PLC.)
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Link-OS Multiplatform SDK
Enables application creation on PCs, smartphones and tablets.
+ Software Manuals
+ Troubleshooting
+ Printer OS (Firmware)
ZT421 Firmware
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Printer OS v92.21.17Z (released August 23, 2022)
Link-OS v6.7 for ZT411, ZT421 and RFID versions of these printers
Download 35 MB View release notes
How to Find Out Printer OS (Firmware) Version
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Firmware Download Utility (ZDownloader)
A utility that uploads Printer OS (Firmware) and Service Packs to your printer.
Download 22 MB View release notes
Upgrade Printer OS (Firmware) using ZDownloader
Other Related Content
-
Factory Installed Printer Emulations
Printer Emulations are on-printer apps that allow this printer to use a variety of printer command languages.
Download 12 MB
Use only on printers that have been updated to Link-OS v6.6
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Link-OS v6.7 MIB file for SNMP
Device management file for use with Link-OS printers.
Download 290 KB
+ Specifications and Characteristics
+ Labels, Parts, Accessories and more
Labels, Ribbons, Tags
Printer Parts
Accessories
ABOUT THE PRODUCT
DISCUSSION FORUM
Discover useful answers or post a question.
REQUEST A REPAIR
Repair services for products under warranty, a service contract or through a time-and-material-based charge.
DECLARATION OF CONFORMITY
View Declaration of Conformity for Zebra products.
ZEBRA ONECARE™ SUPPORT SERVICES
Maintenance that delivers the right plan for your business goals and budget.