Zebra ZD421T 203 dpi Thermal Transfer USB Label Printer [ZD4A042-30PM00EZ]

The Zebra ZD421T 203 dpi Thermal Transfer USB Label Printer [ZD4A042-30PM00EZ] is a genuine Zebra desktop printer for product labels, barcodes and stock identification. This USB configuration is a practical choice for a workstation that does not need a built in Ethernet connection.

It accepts 74 m and 300 m ribbon rolls for thermal transfer printing and can also use suitable direct thermal media. Its Bluetooth Low Energy 5 connection is intended for Zebra's printer setup mobile app only, not ordinary Bluetooth Classic printing.

Value for Your Business

Choose this version for a direct computer connection and everyday 203 dpi labelling. The ribbon roll design lets you choose media and ribbon for your application without paying for a different connectivity configuration. Label durability depends on the material and ribbon combination used.

Key Features

• Flexible printing: Use matching labels and ribbon for thermal transfer, or suitable direct thermal labels without ribbon.
• Simple daily operation: The opening cover gives access to media, while the status icons help identify supplies and printer conditions.
• Business software integration: Zebra Link OS and ZPL II and EPL2 support suit compatible label printing workflows.
• Modular connectivity slot: Additional interfaces require the appropriate optional hardware. Ethernet and WiFi are not included in this configuration.

Compatibility and Media

The ZD421T ribbon roll model accepts media from 15 mm to 112 mm wide, with a maximum print width of 104 mm. Media rolls can have an outside diameter up to 127 mm. Standard media core sizes are 12.7 mm and 25.4 mm.

Use a compatible 74 m or 300 m ribbon with the correct core, width and take up arrangement. Check your label material, dimensions and software template before selecting supplies. Labels and printing ribbon are sold separately.

Compare Related Zebra Printers

Need a wired network connection? See the ZD421T 203 dpi USB and Ethernet version. For finer detail, compare the ZD421T 300 dpi Ethernet version. For direct thermal printing with wireless connectivity, see the ZD421D WiFi and Bluetooth version.

Product Specifications

Ideal For

• Retail product and stock labels
• Dedicated packing or inventory workstations
• Businesses needing thermal transfer media flexibility over USB

What's Included?

• Zebra ZD421T printer, part number ZD4A042-30PM00EZ
• Power supply and regional power cord
• USB cable and printer documentation
• Empty starter ribbon cores and non Zebra 300 m ribbon adapters

Labels, printing ribbon and optional accessories are sold separately.

Why Buy From OzToner

• Australian owned business
• Fast Australia wide shipping
• Local customer support
• Competitive pricing
• Experienced printer and IT specialists

Frequently Asked Questions

Does this version print over ordinary Bluetooth?

No. The included BLE 5 connection is for Zebra's printer setup mobile app. This is not a Bluetooth Classic printing configuration.

Does it include Ethernet or WiFi?

No. This part number has USB and USB Host. Choose a separately listed network or wireless configuration when those connections are needed.

What do 74 m and 300 m refer to?

They are ribbon lengths in metres, not label widths. Both require the appropriate ribbon core and media combination.

Does it use ink or toner?

No. Thermal transfer printing uses ribbon. Direct thermal printing uses compatible heat sensitive labels without ribbon.

Can I use it with my existing label software?

Check that your application supports this Zebra model, its USB connection and the required printer language or driver. Existing templates may need adjustment for the label size and 203 dpi resolution.

Is this the ribbon cartridge model?

No. This is the thermal transfer ribbon roll model, not the ZD421C cartridge version.

Last Updated: 07 October 2026
Last Pricing Update: 07 October 2026. Listing information reviewed; selling price unchanged.