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Could you clarify what you mean? For example, are you looking for:

Troubleshooting tips

  • No driver found: Try the generic Citizen Portable/Label driver matching the TZ/TZ30 family.
  • Wrong encoding or cut issues: Adjust printer settings (dots/mm, speed, darkness) in printer preferences.
  • COM port not present: Change USB cable/adapter and install correct USB-to-serial drivers (FTDI or Prolific) if using an adapter.
  • Paper feed/cut errors: Make sure firmware and cutter settings match the module’s hardware variant.

The Citizen TZ30-M01 is a model designation often associated with the Citizen CT-S310II

7. Migrating to Modern Windows (10/11) – A Note

If you’re planning to upgrade from Windows 7, note that the same driver installation technique works on Windows 10/11 using the “Have Disk” method. However, Microsoft has removed LPT port support in many builds, so USB is highly recommended.