Avoid "driver downloader" websites that bundle malware. Always use official sources.
Buffer overflow or wrong USB mode. Fix: The XP-Q200II can operate in "Virtual COM" mode or "Printer" mode. Check the dip switches on the bottom of the unit. Switch 4 usually toggles USB mode. Flip it, unplug, and reinstall the driver. Xprinter Xp-q200ii Driver -
For further assistance, please refer to the following resources: Avoid "driver downloader" websites that bundle malware