Description

Zebra ZD421D Direct Thermal Desktop Label Printer – 203dpi, up to 152mm/sec, USB, USB Host and Bluetooth Low Energy 5 [ZD4A042-D0PM00EZ].
The Zebra ZD421D Direct Thermal Printer (ZD4A042-D0PM00EZ) is a reliable 4-inch desktop label printer designed for shipping labels, barcode labels, inventory identification, retail, healthcare, warehouse and general business applications. With 203dpi resolution and print speeds of up to 152mm/sec (6 ips), it combines professional Zebra performance with a compact and easy-to-use desktop design.
This configuration includes USB 2.0, USB Host, Bluetooth Low Energy 5 (BTLE5) and a modular connectivity slot for compatible optional connectivity upgrades. As a direct thermal printer, the ZD421D prints directly onto heat-sensitive labels without requiring ink, toner or thermal-transfer ribbon.
✓ Zebra ZD421D 4-Inch Desktop Label Printer
✓ Part Number: ZD4A042-D0PM00EZ
✓ Direct Thermal Printing – No Ribbon Required
✓ Print Resolution: 203dpi / 8 dots per mm
✓ Print Speed: Up to 152mm/sec (6 ips)
✓ Maximum Print Width: 104mm / 4.09"
✓ USB 2.0 + USB Host
✓ Bluetooth Low Energy 5 (BTLE5)
✓ Modular Connectivity Slot for Compatible Optional Upgrades
✓ ZPL & EPL Printer Language Support
✓ Ideal for Shipping, Barcode, Inventory & Warehouse Labels
Key Specifications
| Brand | Zebra |
| Series | ZD421 / ZD421D |
| Part Number / MPN | ZD4A042-D0PM00EZ |
| Print Technology | Direct Thermal |
| Print Resolution | 203dpi (8 dots/mm) |
| Maximum Print Speed | Up to 152mm/sec (6 ips) |
| Maximum Print Width | 104mm (4.09") |
| Maximum Media Width | 108mm (4.25") |
| Maximum Media Roll Diameter | 127mm (5") |
| Connectivity | USB 2.0, USB Host, Bluetooth Low Energy 5 |
| Expansion | Modular Connectivity Slot |
| Ethernet | Not Included in This Configuration |
| Wi-Fi | Not Included in This Configuration |
| Printer Languages | ZPL / ZPL II / EPL |
| User Interface | 3 Buttons + 5 Status Icons |
| Dimensions | Approx. 220.8 × 177.5 × 150.7mm |
| Weight | Approx. 1.35kg |
| Condition | Brand New |
Direct Thermal Printing – No Ink, Toner or Ribbon
The Zebra ZD421D uses direct thermal printing technology. Heat from the printhead creates the printed image directly on compatible heat-sensitive thermal media.
This means there are no ink cartridges, toner cartridges or thermal-transfer ribbons to replace, helping simplify everyday label printing and reduce consumable requirements.
Fast 203dpi Label Printing
The ZD4A042-D0PM00EZ features a 203dpi (8 dots/mm) printhead and can print at speeds of up to 152mm per second / 6 inches per second.
With a maximum print width of approximately 104mm (4.09"), it is ideal for many common 4-inch barcode, shipping and logistics label formats.
USB & USB Host Connectivity
This ZD421D configuration provides reliable wired desktop connectivity through:
- USB 2.0 – for direct connection to a compatible computer or host system
- USB Host – for compatible USB peripherals and devices
For businesses using the printer at a dedicated packing station, retail counter or workstation, USB provides a simple and dependable connection without requiring network configuration.
Bluetooth Low Energy 5 for Easy Printer Setup
The printer also includes Bluetooth Low Energy 5 (BTLE5), supporting convenient printer configuration and setup through compatible Zebra mobile applications.
This specific ZD4A042-D0PM00EZ configuration does not include built-in Ethernet or Wi-Fi. The standard Bluetooth Low Energy connection is primarily intended for compatible Zebra printer setup functionality and should not be confused with optional full Bluetooth wireless printing configurations.
Modular Connectivity Slot
The ZD4A042-D0PM00EZ includes a modular connectivity slot, allowing compatible optional Zebra connectivity modules to be added where supported.
This provides additional flexibility for businesses whose connectivity requirements may change over time, without requiring the printer itself to be replaced.
Ideal for Shipping & Barcode Labels
The Zebra ZD421D is suitable for a wide variety of commercial label-printing applications, including:
- Shipping and courier labels
- Warehouse and dispatch labels
- Barcode labels
- Inventory and stock identification
- Asset identification
- Retail price and shelf labels
- Product identification labels
- Order fulfilment labels
- Receiving and logistics labels
- Healthcare and general business labelling
4-Inch Direct Thermal Media Support
The ZD421D supports direct thermal media up to approximately 108mm (4.25") wide, with a maximum printable width of approximately 104mm (4.09").
The printer accommodates media rolls up to approximately 127mm (5") outside diameter, making it suitable for many standard desktop shipping and barcode label rolls.
ZPL & EPL Compatibility
The Zebra ZD421 platform supports widely used Zebra printer languages including ZPL, ZPL II and EPL.
This makes the ZD421D a strong replacement or upgrade option for businesses already using Zebra-based label templates, barcode software, warehouse systems and compatible shipping applications.
Easy Media Loading
Zebra's OpenACCESS™ clamshell design provides convenient access to the media compartment, helping users replace label rolls quickly and minimise downtime.
The printer's user interface features three control buttons and five status icons, providing clear visual feedback for everyday printer operation.
Zebra Print DNA
The ZD421 platform supports Zebra's Print DNA software ecosystem, providing tools designed to simplify printer configuration, deployment, management and security.
Compatible Zebra software such as ZebraDesigner can also be used to create and print barcode, shipping and product labels.
Compact Desktop Design
The Direct Thermal ZD421D has a compact footprint suitable for busy workspaces:
- Length: Approx. 220.8mm
- Width: Approx. 177.5mm
- Height: Approx. 150.7mm
- Weight: Approx. 1.35kg
Its compact size makes it suitable for packing benches, warehouse workstations, retail counters, reception areas and office desktops.
Need Built-In Ethernet?
If your business requires the label printer to connect directly to a wired network, consider the Zebra ZD421D ZD4A042-D0PE00EZ with built-in 10/100 Ethernet.
The two configurations provide the same core ZD421D 203dpi direct thermal printing platform, but the ZD4A042-D0PE00EZ includes Ethernet as standard, while this ZD4A042-D0PM00EZ configuration provides a modular connectivity slot instead.
Why Choose the Zebra ZD421D?
- Professional Zebra 4-inch desktop label printer
- Fast printing up to 152mm/sec
- 203dpi barcode and text resolution
- No ink, toner or ribbon required
- USB and USB Host connectivity
- Bluetooth Low Energy 5 for convenient printer setup
- Modular connectivity slot for compatible optional upgrades
- ZPL and EPL compatibility
- Easy media loading
- Compact desktop footprint
- Ideal for shipping, warehouse, retail and barcode applications
What's Included?
- 1 x Zebra ZD421D Direct Thermal Printer [ZD4A042-D0PM00EZ]
- Power Supply
- Applicable Power Cord
- Supplied Documentation / Quick Start Information
Please Note: Direct thermal labels are required for printing and are sold separately unless otherwise stated.
Frequently Asked Questions (FAQ)
Is ZD4A042-D0PM00EZ a direct thermal printer?
Yes. It is a direct thermal ZD421D configuration and therefore does not require a thermal-transfer ribbon.
What resolution does this Zebra ZD421D have?
This configuration has a 203dpi (8 dots/mm) print resolution.
How fast can it print?
The 203dpi ZD421D can print at speeds of up to approximately 152mm/sec or 6 inches per second.
Does ZD4A042-D0PM00EZ have USB?
Yes. It includes USB 2.0 and USB Host connectivity.
Does this model have Ethernet?
No. The ZD4A042-D0PM00EZ does not include built-in Ethernet. It has a modular connectivity slot for compatible optional connectivity upgrades. If built-in Ethernet is required, consider the ZD4A042-D0PE00EZ configuration.
Does this model have Wi-Fi?
No. Wi-Fi is not included as standard with this specific configuration.
Does it have Bluetooth?
The printer includes Bluetooth Low Energy 5 (BTLE5), which supports compatible Zebra mobile printer setup functionality. This should not be confused with optional full Bluetooth wireless printing configurations.
Can it print standard 4-inch shipping labels?
Yes. Its maximum print width of approximately 104mm makes it suitable for many common 4-inch shipping, courier and barcode label formats when compatible direct thermal media is used.
Does the printer require ink or toner?
No. The ZD421D prints using heat-sensitive direct thermal labels, so no ink or toner cartridges are required.
Customer Reviews:
★★★★★ “Fast and reliable printer – perfect for our small business.” – Store Owner
★★★★★ “Excellent print clarity and easy Bluetooth pairing.” – Operations Supervisor
Last Updated: 7 October 2026

Estimate shipping
Refund Policy
The OZ Toner Return Policy applies to all purchases made on this website.
We recommend you read our Returns Policy carefully prior to placing an order and retain a copy of these terms and your order so you are familiar with our policy on refunds, returns and exchanges and your rights under the Australian Consumer Law.
We recommend you immediately examine goods delivered to you to ensure that there are no visible signs of damage or fault and that the goods received match the order you placed. Our exchange/return window is within 30 days of receiving your order. All incorrectly ordered or unwanted returns will incur a minimum 20% restocking fee.
Our Return Address
52A/5 Gladstone Rd, Castle Hill, NSW 2154
Exchange/Return (Consumables)
OZ Toner allows exchange/return within 30 days of receiving your order. This applies to consumable products purchased from us: inks, toners, printing and fax supplies and paper. Please scroll down to read our policy on exchange/return for scanners and printers.
If any consumable goods purchased from OZ Toner are damaged, lost in transit, incorrect or faulty, please contact us at support@oztoner.com with this information:
- Your order number
- Detailed description of the reason for return/exchange request
- Photo proof (if applicable).
For exchanges, the product/s must be in the original (new/unused) condition that you received it, in its original packaging. The customer is responsible for the postage fee to send the product/s back to us. OZ Toner will pay the postage to send the new product/s to the customer. All product/s sent back to us must use tracked post, we are not responsible for product/s lost in transit.
Exchange/Return (Hardware)
OZ Toner allows exchange/return within 30 days of receiving your order. This applies to hardware products purchased from us: scanners and printers.
If any hardware goods purchased from OZ Toner are damaged, lost in transit, incorrect or faulty, please contact us at support@oztoner.com with this information:
- Your order number
- Detailed description of the reason for return/exchange request
- Photo proof (if applicable).
Please ensure to contact us via email at support@oztoner.com before returning any items to obtain a Return Authorization Number. Return Authorizations are only valid for 14 days.
It is your obligation to pack returned products satisfactorily to prevent any damage to the items or boxes. You have a legal obligation to take reasonable care of the product/s while they are in your possession until they reach our warehouse.
When returning your purchase, we ask that you provide a Proof of Purchase (Order Confirmation Email) and where possible the product/s in original unopened packaging.
Once received back, we will issue a replacement or full/partial refund depending on actual case.
Change of Mind Returns
Please choose carefully as we do not provide a refund if you have simply changed your mind or made a wrong selection.
If you wish to exchange product/s which you have purchased in error, we will happily exchange provided that:
- You return the product/s within 30 days of purchase.
- You provide Proof of purchase (Your Order Confirmation Email)
- Product/s are unopened, unused and in its original packaging.
- A minimum of 20% restocking fee applies.
- You must bear the risk of return and is responsible for the costs of return postage.
- You must confirm the product/s are received and notify us before returning the product/s, the product/s being returned must satisfy all the return requirement stated above.
- The initial shipping fee charged, or any outbound postage incurred to ship to the customer will not be refunded or credited.
We reserve the right not to offer an exchange if the above requirements are not met.
Return shipping and costs are the responsibility of the customer. We recommend customers to send the item back with a tracked service. For high value products, the customer is also advised to use an insured shipping method.
Faulty or Damaged items
We provide refund or replacement on defective and damaged products.
You MUST contact us within 30 days of product/s being received and believed to be faulty. We will provide the contact information of manufacturer. Customer MUST contact manufacturer to request return authorization letter / DOA letter. Once we received the RA letter or DOA letter from the customer, we will initiate the return process and send customer our return instruction. When the goods are returned to us, we will offer either refund or replacement for the customer.
Items with Manufacturer Warranty:
Buyers must contact manufacturer of the item for all the warranty service within the warranty period. We will provide contact details of the manufacturer to the buyer. We have no other responsibility (including DOA) for items covered with manufacturer warranty.
Items with Onsite Manufacturer Warranty:
Buyers must contact manufacturer of the item for all the on-site warranty service within the warranty period. We will provide contact details of the manufacturer to the buyer. We have no other responsibility (including DOA) for items covered with manufacturer warranty.
Items with Return to Base Warranty:
Buyers are responsible to send back the faulty item to us. Items with valid warranty within the warranty period will be replaced with fully functional unit after checking. Please allow up to 2 weeks for replacement. We have no guarantee on product compatibility with buyers own equipment unless specified on the item listing.
Any other issues and queries, customers are welcome to send us message and email to discuss further.
Refund Conditions
-
Refunds are only issued under certain circumstances, such as:
-
DOA products where no exchange/replacement is possible
-
Incorrect supply where the proper model cannot be provided
-
Approved cases where neither replacement nor upsell option is available
-
-
All refunds must be pre-approved by OzToner.au management before processing.
-
Refunds are made via the original payment method and typically processed within 7 business days after approval.
Delivery Charges
Any product/s replaced under the Returns Policy due to being damaged, faulty or incorrect will be delivered to you free of charge.
Any returns due to you changing your mind about your purchase will incur a re-delivery fee.
Consumer Guarantees
Under the Australian Consumer Law, you have Consumer Guarantees for Goods and Services You purchase. Our product/s come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and for compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the product/s repaired or replaced if the product/s fail to be of acceptable quality and the failure does not amount to a major failure.
Where you believe an item is faulty, you must contact manufacturer to for it to be assessed within a reasonable period of time, and you must request return authorization letter from the manufacturer if the item is confirmed faulty. If there is a major failure with the item, and you have forwarded the return authorization letter granted by manufacturer to us, you may choose a refund or exchange. If the failure is minor, manufacturer will honor the warranty and repair the item for you within a reasonable time.
Where an item is damaged through misuse or abnormal use, OZ Toner cannot provide a refund, exchange or repair, whether the fault is identified by OZ Toner, the manufacturer or their service agent.
OZ Toner will require satisfactory proof of purchase before providing a remedy under the Australian Consumer Law.
For further information about the Australian Consumer Law and Consumer Guarantees, visit www.consumerlaw.gov.au.

![Zebra ZD421D Direct Thermal Printer 203dpi USB [ZD4A042-D0PM00EZ]](http://oztoner.au/cdn/shop/files/Zebra-ZD4AH42-D0PE00EZ-OzToner.jpg?v=1754709611&width=300)
![Zebra Direct Thermal Printer ZD421 203 dpi USB USB Host Modular Connectivity Slot BTLE5 APAC Cord bundle (EU UK AUS JP) Swiss Font EZPL [ZD4A042-D0PM00EZ]](http://oztoner.au/cdn/shop/files/zebra-direct-thermal-printer-zd421-203-dpi-usb-host-modular-connectivity-slot-btle5-apac-cord-bundle-eu-uk-aus-jp-swiss-font-ezpl-zd4a042-d0pm00ez-label-240.png?v=1754705474&width=600)
![Zebra ZD421D Direct Thermal Printer 203dpi USB [ZD4A042-D0PM00EZ]](http://oztoner.au/cdn/shop/files/zebra-zd421-thermal-transfer-right_ce757419-7d2e-4dd8-8ddb-d23bdd4d4276.jpg?v=1754709611&width=1280)
![Zebra ZD421D Direct Thermal Printer 203dpi USB [ZD4A042-D0PM00EZ]](http://oztoner.au/cdn/shop/files/Zebra-ZD4AH42-D0PE00EZ-OzToner.webp?v=1754704561&width=1224)
![Zebra ZD421D Direct Thermal Printer 203dpi USB [ZD4A042-D0PM00EZ]](http://oztoner.au/cdn/shop/files/Zebra-ZD4AH42-D0PE00EZ-specs.webp?v=1754704561&width=1224)