After installation, the driver may default to LPT1 (non-existent). You must change the port.
Fix:
If you are using restaurant POS software (e.g., Micros, Squirrel):
The primary difficulty with the TYSSO PRP-300 is that it is a legacy device. The official TYSSO website is often difficult to navigate or may not list this specific older model prominently. Users often mistake it for similar models (like the PRP-250 or PRP-300N). tysso prp-300 driver download windows 10
Fix: Your POS software is sending the wrong code page. Install the Chinese/English or International variant of the driver. Also, check the DIP switch inside the printer (under the paper roll) – set it to ESC/POS mode, not "OPOS mode."
Last Updated: April 2026
If you own a TYSSO PRP-300 device and have recently upgraded to Windows 10 (or did a clean install), you might have noticed that the device isn’t working plug-and-play. Windows might show an "Unknown Device" or a yellow exclamation mark in Device Manager. After installation, the driver may default to LPT1
Don’t worry. Here is the safe, step-by-step guide to finding and installing the correct driver for the TYSSO PRP-300 on Windows 10.
Step 1: Preparation
Step 2: Execution
Step 3: Connection
Step 4: Verification
Important: TYSSO’s original website (tysso.com) no longer hosts legacy drivers. However, the official OEM driver is maintained under the Xprinter XP-300 series (same hardware). The primary difficulty with the TYSSO PRP-300 is