If the printer spits out long strings of random symbols, it usually means the is mismatched (for Serial connections) or you are using a generic driver that doesn't support the ESC/POS command set. Reinstall the official OCPP-809 driver to fix this. Port Configuration
Once installed, go to "Printers & Scanners" in your OS settings and print a test page to confirm the connection. 4. Key Specifications Print Speed: 300mm/sec. Paper Width: 80mm thermal paper. Cutter: Manual or auto-cutter options.
: Connect the printer via USB, Serial, or LAN before running the installer.
