If after reading this guide you still need the exact driver package:
Go to Services, find "Print Spooler," and select "Restart." Summary Table: OKI PT330 Driver & Settings Requirement / Recommendation Driver Type PT330-331 Raster Driver OS Compatibility Windows 7, 8, 10, 11 (64-bit) Connection USB (Directly to PC) Printing Method Direct Thermal Best Performance Enable "High-Speed" in driver settings oki+pt+330+driver+downloadtrmds+5+better
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Oki no longer directly hosts drivers for all legacy portable printers on their main consumer site, but here is the official path: If after reading this guide you still need