Elevate your expectations with Zebra's ZD421 4-Inch Desktop Printers. The ZD421 is the advanced desktop printer that delivers the features, flexibility, reliability and security you need. Building on the legacy of Zebra's popular GK Series, ZD421 printers add even more capabilities and security measures to set you up for years of use. The ZD421 offers new, advanced features that make it stand apart, including a new, more intuitive user interface, powerful architecture and field-upgradeable wireless kit. Available in direct thermal, thermal transfer, health care and ribbon cartridge models, the ZD421 meets a wide variety of application requirements. Designed to handle advancing technology, the ZD421 is 30% more powerful than the ZD420 Series and 700% more than the GK Series. This lets you run more tasks, perform more operations simultaneously, maintain security and be ready for what's next.