Zebra ZD421 Direct Thermal Barcode Label Printer | 203 dpi, USB (ZD4A042-D01M00EZ)

Name: Zebra ZD421 Direct Thermal Barcode Label Printer | 203 dpi, USB (ZD4A042-D01M00EZ)
Rating: 4.1 (78 reviews)

Product Highlights

Plug-and-print simplicity: Connects via USB and supports 1 in core, 5 in diameter media rolls up to 4.25 in wide.
Ribbon-free operation: Uses direct thermal media to print clear, durable labels without the need for thermal ribbon.
High-speed performance: Prints up to 8 inches per second with 203 dpi resolution for sharp barcodes and text.
Modular upgrade options: Compatible with add-ons like peelers, cutters, and adapters for increased versatility.
Enterprise-ready control: Features Link-OS for remote fleet management, updates, and troubleshooting from anywhere.

Overview
Specifications
FAQ
User Guides
Reviews

Zebra ZD421 – 203 dpi USB Barcode Label Printer

Designed for simplicity, speed, and durability, the Zebra ZD421 (ZD4A042-D01M00EZ) is the ultimate desktop printer for high-volume labeling tasks. With USB connectivity and direct thermal print technology, it eliminates the need for ribbons while maintaining premium print quality. Whether you're printing shipping labels or wristbands, the ZD421 delivers consistent performance with seamless media handling and remote management support.

Plug-and-print simplicity: Connects via USB and supports 1 in core, 5 in diameter media rolls up to 4.25 in wide.
Ribbon-free operation: Uses direct thermal media to print clear, durable labels without the need for thermal ribbon.
High-speed performance: Prints up to 8 inches per second with 203 dpi resolution for sharp barcodes and text.
Modular upgrade options: Compatible with add-ons like peelers, cutters, and adapters for increased versatility.
Enterprise-ready control: Features Link-OS for remote fleet management, updates, and troubleshooting from anywhere.

General Specifications

Model Number: ZD4A042-D01M00EZ
Print Method: Direct Thermal
Print Resolution: 203 dpi / 8 dots per mm
Maximum Print Width: 4.09 in. / 104 mm
Maximum Print Speed: 6 in./152 mm per second (203 dpi)
Operating System: Link-OS®
Programming Languages: ZPL II, EPL 2, XML, ZBI, PDF Direct
User Interface: 5 status icons, 3-button interface
Memory: 512 MB Flash; 256 MB SDRAM
Real-Time Clock (RTC): Yes
ENERGY STAR® Certified: Yes
Construction: Dual-wall frame
Setup Utility: Zebra Setup Utilities via BLE (Bluetooth Low Energy)

Physical Dimensions & Weight

Dimensions (L × W × H): 8.69 in. × 6.98 in. × 5.93 in. (220.8 mm × 177.5 mm × 150.7 mm)
Weight: 2.98 lbs. / 1.35 kg

Connectivity

Standard Interfaces: USB 2.0, USB Host
Optional Interfaces: 10/100 Ethernet, RS-232 Serial, Wi-Fi 5 (802.11ac) with Bluetooth 4.1, Wi-Fi 6 (802.11ax) with Bluetooth 5.3
Bluetooth Low Energy (BLE): For use with Zebra printer setup mobile app only

Media Handling

Media Width: 0.585 in. to 4.25 in. (15 mm to 108 mm)
Media Roll Size: Maximum outer diameter: 5.00 in. / 127 mm
Core Inner Diameter: 0.5 in. / 12.7 mm and 1.0 in. / 25.4 mm standard; 1.5 in. / 38.1 mm, 2.0 in. / 50.8 mm, and 3.0 in. / 76.2 mm using optional adapters
Media Thickness: 0.003 in. (0.08 mm) min.; 0.0075 in. (0.19 mm) max.
Media Types: Roll-fed or fan-fold, die-cut or continuous with or without black mark, tag stock, continuous receipt paper, and wristbands
Media Sensors: Full width, moveable reflective/black mark sensor; multi-position transmissive/gap sensor

Environmental Conditions

Operating Temperature: 40°F to 105°F / 4.4°C to 41°C
Storage Temperature: -40°F to 140°F / -40°C to 60°C
Operating Humidity: 10% to 90% non-condensing
Storage Humidity: 5% to 95% non-condensing
Power Supply: Auto-detectable (PFC Compliant) 100-240VAC, 50-60Hz; ENERGY STAR certified; Energy Efficiency Level VI certified

Fonts, Graphics & Barcodes

Fonts: 16 resident expandable ZPL II bitmap fonts, 2 resident scalable ZPL fonts, 5 resident expandable EPL2 fonts, native open-type font support, Unicode compliant
1D Barcodes: Code 11, Code 39, Code 93, Code 128, ISBT-128, UPC-A, UPC-E, EAN-8, EAN-13, UPC and EAN 2- or 5-digit extensions, Plessey, Postnet, Standard 2-of-5, Industrial 2-of-5, Interleaved 2-of-5, Logmars, MSI, Codabar, Planet Code
2D Barcodes: Codablock, PDF417, Code 49, DataMatrix, MaxiCode, QR Code, MicroPDF, Aztec

Included in the Box

Package Contents: Printer, AC power supply, power cord(s), USB cable, Quick Start Guide, Regulatory Guide

📥 Download Product Manual (PDF)

What type of printer is the ZD4A042-D01M00EZ?

The ZD4A042-D01M00EZ is a Zebra ZD421 Direct Thermal Desktop Label Printer. It uses direct thermal technology, meaning it prints without ink or ribbon by heating specially coated labels.

Does this printer require ink or ribbon?

No. This model uses direct thermal printing, so it does not require ink, toner, or ribbon. Just use compatible thermal labels or receipt paper.

What label sizes are supported?

The ZD421 supports a wide variety of label sizes. Common widths range from 0.75 inches to 4.25 inches. Be sure to check the product manual or contact us for help choosing the right label.

What interfaces are included?

This model typically includes USB, Ethernet, and Serial ports for flexible connectivity. Some configurations may also support Wi-Fi or Bluetooth (sold separately).

How do I install the driver and set up the printer?

You can download the official driver and Zebra Setup Utilities from the Zebra Support Page. The utility walks you through installation, calibration, and test printing.

Can it print barcodes and graphics?

Yes, the ZD421 supports barcode printing (1D and 2D), logos, and other simple graphics. You can use ZebraDesigner or any compatible label software.

How do I perform maintenance or clean the printer?

Regular maintenance includes cleaning the printhead and roller with isopropyl alcohol and checking for dust or adhesive build-up. Refer to the user guide for step-by-step instructions.

Where can I get replacement labels and accessories?

We carry a full line of compatible Zebra thermal labels, replacement parts, and accessories. Visit our supplies page or contact our support team for help.

What operating systems are supported?

The ZD421 supports Windows 7 and above, and can work with Mac/Linux via CUPS drivers. Make sure to check Zebra’s official site for the latest driver versions.

Is technical support available?

Yes! You can reach our customer support team for setup help, troubleshooting, or warranty questions. We're here to make sure your printer runs smoothly.

Regular price: $390.00
Sale price: $390.00
Unit price: per