Zebra ZD621 vs ZD421: Which Event Printer Should You Rent?

The Zebra ZD621 and ZD421 look similar. Both are desktop thermal printers. Both print badges. But for event use, the differences matter. Here's how to choose.

Zebra ZD621 Overview

The ZD621 is Zebra's premium desktop printer. It replaces the older GX and ZD500 series with faster processing, better connectivity, and a colour LCD display.

Key specs: - Print speed: up to 8 inches per second - Resolution: 203 dpi (standard) or 300 dpi (optional) - Connectivity: USB, Ethernet, WiFi, Bluetooth - Max media width: 4.65 inches - Display: 4.3-inch colour touchscreen

Zebra ZD421 Overview

The ZD421 is the mid-range option. It shares the same print engine as the ZD621 but with fewer premium features.

Key specs: - Print speed: up to 6 inches per second - Resolution: 203 dpi - Connectivity: USB, Ethernet (WiFi optional) - Max media width: 4.25 inches - Display: Icon-based LED (no touchscreen)

Side-by-Side Comparison

Which One for Your Event?

Choose ZD621 if: - You need to print 4×6" badges or wristbands - WiFi printing is essential (no Ethernet cabling at venue) - Staff need a touchscreen for quick setup changes - You have 500+ attendees and speed matters

Choose ZD421 if: - You're printing standard 4×3" conference badges - Ethernet is available at the venue - Budget is tight - Attendee count is under 300

Real-World Throughput

At a typical conference check-in: - ZD621: ~120 badges per hour (including staff handling time) - ZD421: ~90 badges per hour

For a 1,000-person event with a 2-hour peak check-in window, you need: - ZD621: 2-3 printers - ZD421: 3-4 printers

Rental Tip

Most Hong Kong rental companies stock the ZD621 because it's the newer model. The ZD421 is harder to find. If your quote specifies ZD421, confirm availability 2 weeks before the event.

Get a quote: Tell us your attendee count and badge size and we'll recommend the right Zebra model and quantity.