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White desktop barcode printer with dual-wall frame and control panel

Zebra

Zebra ZD4A042-301M00EZ 4-Inch Barcode Printer 203 dpi

SKU CH-V4YW-8CD5T MPN ZD4A042-301M00EZ

Desktop thermal-transfer and direct-thermal label printer at 203 dpi with USB, Bluetooth Low Energy 5 and modular connectivity slot

  • Weight8.0000
  • Thermal transfer or direct thermal printing flexibility
  • 203 dpi resolution for clear barcode labels
  • USB 2.0, USB Host, Bluetooth and modular connectivity slot
  • ZPL and EPL programming language support
  • ENERGY STAR certified with dual-wall frame construction

Zebra ZD421 4-Inch Barcode Printer

The Zebra ZD421 is a 4-inch desktop barcode and label printer built for businesses that need reliable thermal printing. It supports both thermal transfer and direct thermal methods at 203 dpi with a print speed of 4 ips. Dual-wall frame construction adds durability for daily use. ENERGY STAR certification confirms efficient operation.

Connectivity and Workflow Fit

This model suits operations that require flexible connectivity including USB 2.0, USB Host, Bluetooth Low Energy 5, and a modular connectivity slot. ZPL and EPL programming languages ensure compatibility with existing label workflows. A mobile setup app for Android and iOS simplifies configuration via BLE. It is not for buyers who need integrated Wi-Fi or Ethernet without adding a module.

Setup Checks Before Ordering

Verify that your label stock matches the 4-inch maximum width and that your media type aligns with thermal transfer or direct thermal printing. Confirm your host system can communicate over USB 2.0, USB Host, or Bluetooth Low Energy 5. Ensure you have a US power cord connection available. Check that your label design software outputs ZPL or EPL commands.

Highlights

  • Thermal transfer or direct thermal printing flexibility
  • 203 dpi resolution for clear barcode labels
  • USB 2.0, USB Host, Bluetooth and modular connectivity slot
  • ZPL and EPL programming language support
  • ENERGY STAR certified with dual-wall frame construction

Specifications

BrandZebra
Weight8.0000
Shipping weight2.72 kg
Package size381 × 305 × 305 mm

Questions about this item

What label roll core size and maximum outer diameter does the ZD421 require?

The ZD421 uses standard 4-inch wide media rolls with a 1-inch core; maximum roll diameter is 5 inches for thermal transfer and direct thermal operation.

Can I connect the ZD421 to a legacy PC that only has a USB 1.1 port?

Yes, the USB 2.0 interface is backward compatible with USB 1.1, so the printer will communicate at the slower 1.1 speed without extra adapters.

How do I confirm the ZD421 is printing at the correct 203 dpi resolution after setup?

Print a configuration label using the three-button sequence; the label lists the detected print resolution as 203 dpi along with firmware version and sensor settings.

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