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Compact black desktop label printer with Hi-Lift cover open, showing roll holder and tear bar

Citizen

Citizen CL-E321XUBNNA 4" label printer 203 dpi USB LAN Serial

SKU CH-QR52-R62A6 MPN CL-E321XUBNNA

Prints 4-inch thermal transfer and direct thermal labels at 203 dpi and 8.00 inches per second with USB, LAN and Serial interfaces

  • Memory sizeFlash (Non-Volatile Memory): 16 MB total, 4 MB available for
  • Interface typeTriple interface USB 2.0, RS-232 and 10/100 Ethernet
  • Printing methodDirect Thermal/Thermal Transfer Printer
  • Printer categoryDesktop
  • Printing speed8 in per second (200 mm/s)
  • Max monochrome resolution203 dpi
  • Prints up to 8.00 inches per second at 203 dpi resolution
  • Direct thermal and thermal transfer printing handles diverse label requirements
  • Triple interface with USB 2.0, RS-232 and 10/100 Ethernet connectivity
  • Hi-Lift mechanism opens 90 degrees for tool-free head and platen replacement
  • Compact 6.80 x 7.00 x 10.47 inch footprint fits tight workspaces

Compact 4-inch thermal printer for logistics

The Citizen CL-E321XUBNNA is a desktop barcode and label printer built for warehouse, logistics and healthcare environments. It supports both direct thermal and thermal transfer printing at 203 dpi. The unit handles media widths from 1.00" to 4.00" and roll diameters up to 5.00" on a 1.00" core. Triple connectivity with USB 2.0, RS-232 and 10/100 Ethernet fits existing infrastructure.

Sustained 8 ips output with tool-free maintenance

At 8.00 inches per second the printer maintains throughput for continuous label batches rather than short bursts. The Hi-Lift mechanism opens 90 degrees for drop-in media loading and quick ribbon changes. Both print head and platen can be swapped without tools in roughly one minute. An adjustable sensor handles gap and black mark detection to keep alignment stable over long runs.

10/100 Ethernet limits and emulation scope

The 10/100 LAN port caps network throughput at 100 Mbps, so high-volume print servers may saturate the link before the engine reaches 200 mm/s. Onboard memory provides 16 MB flash and 32 MB RAM with 4 MB user-available each, restricting stored label formats and fonts. Supported emulations cover UCC/EAN, GS1-Databar, QR Code, PDF 417 and common linear symbologies but do not extend to newer 2D standards.

How it compares

Measured against everything we stock in Thermal Label & Receipt Printers, at today’s prices. Recalculated every night.

Price $289.99
Pricier than about 73% of the 858 comparable items (median $84.99).
Memory size Flash (Non-Volatile Memory): 16 MB total, 4 MB available for user RAM (standard Memory): 32 MB total, 4 MB available for user
Lower than about 60% of the 163 comparable items (median 0.06 GB).

Specifications

Product
Brand nameCITIZEN
Model name(CL-E321) CL-E321XUBNNA
Printer categoryDesktop
Performance
Printing speed8 in per second (200 mm/s)
Max monochrome resolution203 dpi
Memory
Memory sizeFlash (Non-Volatile Memory): 16 MB total, 4 MB available for user
RAM (standard Memory): 32 MB total, 4 MB available for user
Ports & slots
Interface typeTriple interface USB 2.0, RS-232 and 10/100 Ethernet
Size & build
Product dimensions6.8 in × 7 in × 10.47 in
Product weight5.73 lb (2.6 kg)
Shipping weight3.97 kg
Package size381 × 286 × 279 mm
Compatibility
Accepted media sizesMedia Width (min to max): 1 in to 4 in (25 to 118 mm)
Media Thickness (min to max): 63.5 to 190 micrometer
More details
Printing methodDirect Thermal/Thermal Transfer Printer
Supported barcodesUCC/EAN
Composit Symb
GS1-Databar
QR Code
PDF 417
CODABAR(NW-7)
CODE128
CODE93
CODE39
Codabar, ITF
EAN-8(JAN-8),
EAN-13 (JAN-13)
UPC-E
UPC-A
Code3of9
Cutter typeTear Bar
Print dimensionsPrint Width (maximum): 4 in (104 mm)

Questions about this item

How loud is the CL-E321XUBNNA when it runs continuously through a shift?

The printer uses direct thermal and thermal transfer technology with no cooling fan, so operation stays quiet even at the full 8.00 inches per second print speed.

Which cables and media do I need on hand before the CL-E321XUBNNA can start printing?

Connect with a USB 2.0, RS-232 or Ethernet cable and load labels 1.00 to 4.00 inches wide on a 1.00 inch core roll up to 5.00 inches in diameter.

Will the CL-E321XUBNNA replace my older 203 dpi desktop printer that uses ZPL or EPL commands?

Yes — the Cross-Emulation firmware interprets ZPL II, EPL and other common languages so existing label formats print without rewriting.

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