Description
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.
- ✔ 203 dpi resolution for labels and barcodes
- ✔ USB 2.0 and USB Host connections
- ✔ Print speeds up to 152 mm per second
- ✔ Maximum printable width of 104 mm
- ✔ Supports 74 m and 300 m ribbon rolls
- ✔ 512 MB Flash and 256 MB SDRAM
- ✔ Five status icons and three control buttons
- ✔ Movable media sensor and adjustable guides
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
| Brand and model | Zebra ZD421T |
|---|---|
| Manufacturer part number | ZD4A042-30PM00EZ |
| Condition | New, genuine Zebra |
| Print technology | Thermal transfer ribbon roll; direct thermal with suitable media |
| Resolution | 203 dpi |
| Maximum print speed | 152 mm per second |
| Maximum print width | 104 mm |
| Connections | USB 2.0 and USB Host; BLE 5 for setup only |
| Memory | 512 MB Flash and 256 MB SDRAM |
| Media width | 15 to 112 mm |
| Maximum media roll diameter | 127 mm |
| Ribbon lengths | 74 m or 300 m |
| Printer dimensions | 267 × 202 × 189 mm, length × width × height, excluding packaging |
| Printer weight | 2.05 kg, excluding packaging |
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.
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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
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Refunds are only issued under certain circumstances, such as:
-
DOA products where no exchange/replacement is possible
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Incorrect supply where the proper model cannot be provided
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Approved cases where neither replacement nor upsell option is available
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All refunds must be pre-approved by OzToner.au management before processing.
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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.

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