[shortdesc] Thermal transfer printing, 300 dpi resolution, up to 102 mm/sec speed, USB and USB Host connectivity, 4-inch desktop label printer [/shortdesc] [properties] Brand Zebra Series ZD400 Series Model ZD421 SKU ZD4A043-301M00EZ Product Type Thermal Transfer Desktop Printer Print Technology Thermal Transfer Print Color Monochrome Maximum Print Resolution 300 dpi Maximum Print Speed 102 mm/sec (4.02 in/sec) Maximum Print Width 108 mm (4.25 in) Application / Usage Desktop Recommended Use Label and Receipt Printing Form Factor Desktop Real Time Clock (RTC) Yes ENERGY STAR Certified Yes [/properties] [specifications] Memory 256 MB SDRAM Flash Memory 512 MB Interfaces USB 2.0, USB Host Printer Languages ZPL II, EPL2, XML, ZBI, PDF Direct Mobile Device Printing Yes (via App/BLE) Media Types Supported Die-cut labels, Continuous labels, Black mark labels, Tag stock, Receipt labels, Wristbands Maximum Label Length 991 mm (39.0 in) Maximum Roll Diameter 127 mm (5 in) Media Thickness 0.08 mm to 0.19 mm Operating Temperature 4.4 °C to 41 °C (40 °F to 105 °F) Operating Humidity 10% to 90% non-condensing Power Input 100–240 VAC, 50–60 Hz Dimensions (W × D × H) 202 mm × 267 mm × 189 mm (8.0 × 10.5 × 7.44 in) Weight 2.05 kg (4.52 lb) Certifications RoHS compliant [/specifications] [accesories] Included Printer unit; USB cable; AC power supply; Power cord; Quick Start Guide; Regulatory Guide; Empty ribbon take-up cores (0.5 in and 1 in); Ribbon core adapters Optional Accessories Battery; Carrying case; Cutter; Dispenser/Peeler; Ethernet module; Wi-Fi and Bluetooth module; Keyboard Display Unit; Mounting plate [/accesories] Precision Label Printing for Demanding Desktop Environments The Zebra ZD421 Thermal Transfer Label Printer is engineered for businesses that require consistent, high-quality label output in a compact desktop form factor. Built on the proven legacy of Zebra’s GK Series, the ZD421 combines modern processing power, advanced media handling, and reliable thermal transfer technology to support long-term operational efficiency. With crisp 300 dpi print resolution and flexible connectivity, it is designed to integrate seamlessly into existing workflows. Key Benefits & Features High-Resolution Thermal Transfer Printing: Produces sharp text, barcodes, and graphics at 300 dpi, ideal for small labels and detailed data. Fast and Reliable Output: Delivers print speeds up to 102 mm per second, supporting steady daily label production without bottlenecks. Flexible Connectivity: Equipped with USB 2.0 and USB Host ports for direct PC connection or standalone printing scenarios. Advanced Media Compatibility: Supports a wide range of label, tag, and receipt media with a movable media sensor for accurate alignment. Durable Desktop Design: Dual-wall frame construction enhances reliability in office, retail, and light industrial environments. Ideal Use Cases Retail price labels and shelf labeling Shipping, receiving, and logistics labels Asset tracking and inventory management Healthcare and laboratory identification labels Light manufacturing and work-in-process labeling Technical Specifications Print Technology: Thermal Transfer Print Resolution: 300 dpi Maximum Print Speed: Up to 102 mm/sec Maximum Print Width: Up to 108 mm Interfaces: USB 2.0, USB Host Memory: 512 MB Flash, 256 MB SDRAM Media Types: Die-cut labels, continuous labels, tag stock, wristbands Form Factor: Desktop Upgrade Your Labeling Workflow Today Choose the Zebra ZD421 Thermal Transfer Label Printer for dependable performance and professional-grade label quality. Order today.