: Under "Printer Port," select RongtaUSB PORT (or the corresponding virtual USB port).
For generic Linux: Use a standard ESC/POS driver via Python ( python-escpos ) or the rastertozpl filter. download rongta rp80use printer driver setup
Check the printed receipt for clear text and correct alignment. To help tailor any troubleshooting advice, let me know: What are you using? : Under "Printer Port," select RongtaUSB PORT (or