Installing Zebra Gk420d: how exactly do you do it?

Installing the Zebra GK420d can be quite a challenge, as we at Zolemba know better than anyone. To help you get started, we have created a clear manual for you here. Step by step we take you through the installation of your Zebra Printer so you can quickly start printing your labels on your Zebra labelprinter GK420d.

Zebra printer GK420d: The first step


The Zebra printer GK420d is known for being flexible, advanced, and affordable, making it ideal for medium volumes and various printing applications. The GK420d Zebra printer is often used in healthcare, retail, for printing coupons and receipts, in the transportation and logistics sector, as baggage tags, and even for parking cards. When combined with Zolemba's Zebra labels, you can get started with this Zebra label printer right after installation.

To make it even easier to get started with your label printer, at Zolemba we have described step by step below how to install your GK420d Zebra printer.

Before we get started, do not connect your printer to your PC or Mac with the USB cable yet. This may cause your printer to appear as "unknown" in the list of devices. This is not very convenient if you want to find it easily later.

Simply start by unpacking the Zebra GK420d label printer. First, remove all the parts from the box, and then follow this step-by-step guide. It may seem like a lot and very difficult, but it will be okay, really! 


The correct Zebra GK420d driver


The first thing you need is the correct driver to install your driver, in this case, the Zebra GK420d driver. You need this to make your label printer work properly on your PC or Mac. The installation of the printer and driver is slightly different on both systems. Below we have broken down both options so you can easily follow the installation process for either Mac or Windows.

Click on one of the links below to go directly to the correct section.



Installing Zebra label printer GK420d via Windows

To install the Zebra printer GK420d driver on a Windows computer, you first need to download the appropriate driver from the Zebra website. You can do this by following this link: Download Zebra software


gk420d installation software


Once you have reached the website, you need to download the Zebra Setup Utilities for Windows.


finish installation


After you have downloaded the driver, double-click the downloaded file to start the installation process of your Zebra label printer GK420D. The installation wizard will guide you through the steps to install the driver on your computer. Then, start the program by checking the box "Run zebra setup utilities now" and clicking "Finish".

Once the installation is complete, the program will open automatically if you have checked the box.



zebra software first step


Click "Next" to proceed to the next step and choose which port you want to use to install the Zebra printer.


zebra software usb selection


Select USB here and click "Next".


zebra software usb connection


Turn on your printer now using the button on the back and connect the GK420d Zebra to your PC using the USB cable. Once done, click on "Finish". The Zebra GK420d driver is now installed.


gk420d calibration


Click on the "Refresh printer list" button and select your printer from the list, then click on "Configure Printer Settings".


gk420d label parameters


Here you can set the size of your labels. Make sure the units are set to mm. Want to print shipping labels? For most carriers, the dimensions of the label are 102 mm (width) x 150 mm (height). Want a complete overview of the shipping labels that Zolemba offers? No problem! Go to the shipping label overview.


The remaining steps you encounter are good and can be skipped by clicking "Next" or directly clicking "Finish".

To further calibrate the printer, click on "Open Printer Tools" and go to the 2nd tab "Action", and select "Calibrate media".


gk420d calibration 1


gk420d calibration 2


Press "Send" to complete the calibration process. A test print will now come out of your Zebra label printer GK420d. Now you can check if your shipping label looks good and if everything is set up correctly. If you still want to make adjustments or if you notice that something is not set correctly in terms of dimensions, this is the time to adjust the settings of your shipping label printer.

We are almost there now! The final step remaining is to ensure that you set up your printer correctly on your PC. You can do this by going to "Settings" via Windows, then select "Devices" and click on "Printers and scanners".


Zebra gk420d settings windows


Select your Zebra label printer from the list and click on Manage. After doing this, you can choose "Printer properties".

gk420d printer properties


You will then come to the following screen:


algemene voorkeursinstellingen


To set the format, go to "General" and then to "Preferences".


algemene voorkeursinstellingen 2


Select millimeters and choose the correct format for the shipping label. In the case of a Zebra shipping label, this is 102 mm x 150 mm.


Under "Advanced Settings", click on "Calibrate" and then click "Apply".


geavanceerde instellingen



Congratulations! You have completed the installation and are now ready to print your labels. Do you have enough Zebra labels in stock? If not, take a look at our zebra labels page.


Installing Zebra GK420d using Mac and Cups drivers


To install the Zebra label printer GK420d on your Mac, follow these steps. Connect the printer to the power supply with the adapter and plug the USB cable into your Mac. Then open the settings menu on your Mac and go to Printers and Scanners:


instellingen mac printers en scanners


Click on the + symbol in the lower left corner and select the Zebra label printer GK420d from the list.


select printer


select software


Under "Use: Choose a Driver...", select "Select Software".


mac software select


From the list that appears, select "Zebra ZPL Label Printer".


add software gk420d


Close by clicking on “Add”.

The next step is to calibrate the Zebra label printer GK420d. You can do this by opening your browser and typing “localhost:631” in the address bar.




You will now enter the “CUPS” menu. Here you select the option “printers” from the menu.

gk420d cups printer select


Once you have selected the printers option, you will see a notification indicating that the web interface is disabled. Don't worry, this is easy to fix and is part of correctly setting up your Zebra printer.


webinterface disabled

To fix this, you need to copy the piece of text “cupsctl Webinterface=yes” and open your terminal. You can open your terminal by pressing “cmnd + space” and then searching for "terminal".


open terminal


terminal open copy


In your terminal, paste the copied piece of text and then press enter.


select printer from cups list


Reload your page using the reload symbol in your browser, now you will see all printers that are linked to your Mac.


set default opties


Select the Zebra printer from the list and select "set default opties" from the list.


media size custom


Here you can set your media size for your Zebra labels. Do this by choosing the option "custom" from the dropdown menu under media size. Select the option millimeters for units and enter the dimensions of your label. For a standard shipping label this is width: 102 mm and height: 150 mm. Close with "Set Default opties".



username and password cups


The final step to complete your installation is to enter your Mac login credentials. Finish by logging in and your installation is complete. Congratulations! You can now get started with your Zebra printer GK420d, that is, if you have enough Zebra labels at home. You can also quickly and easily order these from Zolemba, for example, take a look at our Zebra compatible DPD label page. If you still have questions about installing your Zebra printer GK420d or any other Zebra label printer, please feel free to contact us. The team at Zolemba is ready to help you get started with your Zebra printer!







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